Demons and the Devil: What the Catholic Church Actually Teaches

Quick Insights

The Catholic Church teaches that the devil and demons are real personal spiritual beings, not symbols or metaphors, whose existence is a truth of faith confirmed by Sacred Scripture, Sacred Tradition, and the solemn Magisterium.
Satan was originally created as a good angel who freely and definitively chose to reject God at the beginning of his existence, and his rebellion brought a number of other angels into the same permanent state of malice and separation from God.
The devil exercises a genuine but limited influence over the world and over human beings, and his power is always subordinate to and circumscribed by the absolute sovereignty of God.
The Church distinguishes between ordinary temptation, which every person faces, and extraordinary demonic activity such as obsession and possession, which are rare, require specific pastoral discernment, and can be addressed through the Church’s rite of exorcism.
The Rite of Baptism includes a formal renunciation of Satan and his works, demonstrating that the reality of demonic opposition to salvation belongs not to the margins but to the very core of Catholic sacramental life.
Catholics respond to the reality of the devil not with panic or obsessive preoccupation but with confident reliance on Jesus Christ, whose death and resurrection have definitively defeated the power of evil and whose grace is always stronger than any demonic influence.

Introduction

The Catholic Church’s teaching on the devil and demons occupies a position that is at once central to her doctrine and frequently misunderstood in the culture at large, dismissed by secularists as superstitious fantasy and sensationalized by popular entertainment into something equally distant from the Church’s actual and carefully nuanced position. The Church teaches with full doctrinal authority, grounded in the words of Christ himself and the consistent testimony of Scripture and Tradition, that Satan and the demons are real personal spiritual beings, genuinely free agents who at the beginning of their existence made a definitive and irrevocable choice to reject God and who have since that time directed their formidable spiritual intelligence toward the ruin of human souls. The Catechism of the Catholic Church addresses the devil and demonic activity with theological precision and pastoral seriousness, presenting the reality of Satan as inseparable from the full Catholic understanding of creation, freedom, redemption, and the ongoing struggle of the Christian life (CCC 391-395). This is not a marginal or optional element of Catholic faith; the existence of the devil and his opposition to human salvation is woven into the very language of the Creed, the sacraments, and the Church’s daily liturgical prayer. At the same time, the Church’s teaching carefully guards against the opposite error of over-dramatizing demonic reality to the point of losing the theological perspective that places all creaturely evil firmly within the ultimate sovereignty of a God whose love and power no created force can resist or overcome. The authentic Catholic understanding of demons and the devil requires holding these two truths simultaneously: the devil is real and genuinely dangerous, and the victory of Christ over evil is total and absolute.

The history of the Church’s engagement with this doctrine reveals a remarkably consistent affirmation of the devil’s real existence against repeated attempts to reduce him to a symbol, a projection, or a mythological figure. The early Church Fathers, including Saint Justin Martyr, Origen of Alexandria, Saint Irenaeus of Lyon, and Tertullian of Carthage, all wrote about the devil and his activity with great seriousness, situating demonic opposition within their accounts of salvation history and the Christian moral struggle. Saint Augustine’s City of God devoted extended attention to the nature and origin of the fallen angels, arguing that the two cities, the heavenly city and the earthly city, are constituted precisely by two kinds of love, the love of God to the contempt of self, and the love of self to the contempt of God, and that the devil’s choice inaugurated the principle of the second city in the spiritual order. Saint Thomas Aquinas explored the nature of demonic intellect, will, and activity in his Summa Theologica with his characteristic philosophical precision, establishing the framework that has informed Catholic demonology ever since. The Fourth Lateran Council in 1215 formally defined that the devil was created good by God and became evil by his own free choice, a definition that protects both the goodness of God’s creation and the genuine freedom of the angelic will. The Second Vatican Council, though it did not issue a formal document specifically on demonology, reaffirmed the reality of Satan in several contexts, including the Constitution on the Sacred Liturgy and the Pastoral Constitution Gaudium et Spes, in which the Council described the entire course of human history as involving a dramatic struggle between good and evil that cannot be understood without reference to the personal force of the Evil One. This article presents the full Catholic teaching, drawing on all of these sources, so that the reader may understand exactly what the Church holds about the devil and demons and why that teaching matters for the whole of Catholic life.

The Origin and Nature of the Devil

The Catholic Church teaches that Satan was not always evil, that he did not spring into existence as a force of darkness, and that his present condition as the principal opponent of God and humanity is entirely the result of his own free and final choice. This truth is theologically essential because it protects the fundamental conviction that God is the Creator of all things and that everything God creates is originally and intrinsically good, so that evil has no independent metaphysical status but exists only as the privation, the absence or corruption, of a good that should be present. The Catechism states plainly that the devil was created good by God and by his own free choice became evil (CCC 391), and this formulation carries within it the whole Catholic understanding of the relationship between creation, freedom, and moral evil. Satan was, by the tradition’s consistent account, a being of extraordinary spiritual power and intelligence, among the highest of the angelic orders, whose brilliance and capacity for knowing God were unmatched among creatures. His fall was therefore not the stumbling of a weak or ignorant being but the catastrophic self-determined ruin of a being magnificently equipped for the service and love of God, a ruin produced entirely by the misuse of the very greatness God had given him. Scripture’s use of the name “Lucifer,” meaning “light-bearer” or “son of the dawn,” in the oracle of Isaiah 14, which the tradition has long applied to Satan’s fall, captures this paradox with painful clarity: the most brilliantly endowed of God’s creatures became, through his own free act, the most radically self-opposed to the good.

The specific character of Satan’s sin against God has been a subject of sustained theological reflection, and while the exact content of the original angelic temptation and fall remains partly beyond human knowledge, the tradition has consistently identified pride as its central element. Saint Thomas Aquinas argued with precision that the chief fallen angel desired the highest beatitude, the direct and perfect knowledge of God, not as a gift of divine grace freely given but as something owed to him and achievable by his own natural power, asserting in effect a kind of radical self-sufficiency that the creaturely condition fundamentally excludes. This is the deepest form of pride: not the ordinary human vanity that overestimates one’s talents or seeks excessive attention, but the more radical refusal to accept the condition of creatureliness itself, the demand to be the source of one’s own ultimate good rather than to receive it gratefully from the God who alone possesses it. Saint Thomas also argued that some of the other angels were drawn into this initial rebellion by following the leadership of the chief fallen angel, so that the demonic world has a social character, structured by a hierarchy of malice that mirrors, in its perverse inversion, the hierarchy of love that characterizes the angelic orders of heaven. The name “Satan” means “adversary” in Hebrew, expressing the fundamental orientation of his existence after the fall: not a being who has achieved anything positive for himself, but one defined entirely by opposition, by the determination to set himself against God and against everything God loves. The name “devil” derives from the Greek “diabolos,” meaning “the slanderer” or “the accuser,” pointing to the specific mode of demonic activity most characteristic of Satan’s influence on human history, the constant effort to slander God before humanity and to slander humanity before God.

What Scripture Says About the Devil

Sacred Scripture’s testimony about the devil and his activity is pervasive, consistent, and theologically rich, spanning from the first pages of Genesis to the final chapters of Revelation, and forming the primary source from which the Church’s doctrine draws its content and its authority. The Book of Genesis presents the earliest narrative encounter between the devil and humanity in the account of the temptation in the garden, where the serpent, identified in the tradition and explicitly in the Book of Revelation as the ancient serpent who is the devil and Satan (Revelation 12:9), approaches Eve with a precisely calibrated strategy of doubt, misrepresentation, and seduction. The serpent first distorts God’s command by asking “Did God say, ‘You shall not eat of any tree in the garden’?” (Genesis 3:1), introducing a note of suspicious restriction where God had in fact given enormous freedom, and then flatly contradicts God’s warning by declaring “You will not die” (Genesis 3:4), offering instead the promise that they will “be like God, knowing good and evil” (Genesis 3:5). The tactics visible in this account, the misrepresentation of God’s goodness, the flat denial of his truthfulness, and the offer of a false and creaturely substitute for genuine divine life, recur throughout Scripture’s portrait of satanic activity and correspond directly to the strategies the Church’s tradition has always recognized as characteristic of demonic temptation. The Catechism draws directly on this Genesis narrative to describe the devil’s fundamental activity as the seduction of human beings away from obedience to God through the same strategy of deceptive promise and distorted representation that constituted the original fall (CCC 394).

Jesus’s encounter with the devil in the wilderness, presented by Matthew, Mark, and Luke, provides the most theologically developed portrayal of Satan’s direct activity in the entire New Testament, and its significance within the Gospel narratives is enormous. Jesus, immediately after his Baptism and the Father’s declaration “This is my beloved Son, with whom I am well pleased” (Matthew 3:17), spends forty days in the desert being tested by the devil, who offers him bread from stones, the kingdoms of the world, and the temptation of spectacular divine protection, all three attempts aimed at redirecting Jesus away from the Father’s will and toward a messiahship defined by power, self-sufficiency, and worldly success rather than by sacrificial love and obedience. Jesus meets each temptation with the word of God drawn from Deuteronomy, demonstrating that fidelity to Scripture and trust in the Father constitute the definitive response to demonic assault. The Gospel of John presents some of the most theologically precise descriptions of Satan’s nature, with Jesus calling him “the father of lies” and “a murderer from the beginning” (John 8:44), identifying lying and the bringing of death as the two activities most essentially constitutive of demonic existence, the inversion of the two great characteristics of God, who is truth itself and the author of life. The same Gospel presents Jesus’s death and resurrection as the moment of the devil’s definitive defeat, with Jesus declaring before his Passion, “Now is the judgment of this world; now will the ruler of this world be cast out” (John 12:31), and assuring his disciples after the resurrection that he has “overcome the world” (John 16:33). The whole arc of the New Testament testimony moves from the serpent’s initial victory in Eden through the devil’s futile but genuine assault on the ministry of Jesus to the complete and permanent defeat of demonic power in the Paschal Mystery, the death and resurrection of Christ.

The Devil’s Activity in the World: Temptation and Its Limits

The Catholic Church holds that the devil exercises a genuine and ongoing influence in the world and in human lives, but she specifies this influence with considerable precision to avoid either underestimating its reality or overestimating its power relative to the grace of God. The Catechism teaches that the devil has a certain power over the world that flows from his original sin and that his activity constitutes “a great trial for the Church” and for each individual person (CCC 395). This power over the world is real, but it is not unlimited, and the Church is careful to distinguish between saying that the devil has influence and saying that he has dominion. God alone has dominion over creation; the devil’s power is derivative, permitted, and always circumscribed by divine providence in a way that the book of Job illustrates with narrative vividness, where God sets specific limits on what Satan is permitted to do to Job even as he allows the testing to occur (Job 1:12, 2:6). The ordinary mode of demonic influence that every human being encounters is temptation, the presentation to the human will of inducements to choose sin, to turn away from God, and to pursue creaturely goods in a disordered way that substitutes them for the infinite good of God himself. Temptation is not sin; the Catechism and the whole moral tradition make clear that being tempted is not a moral failure, since Jesus himself was tempted and “yet without sinning” (Hebrews 4:15), and that the human person retains full freedom to resist temptation through the grace of God and the practice of virtue.

The specific tactics of demonic temptation have been analyzed with considerable sophistication by the Church’s spiritual tradition, drawing on both theological reasoning and the practical wisdom of saints who had long experience in the discernment of spirits. Saint Ignatius of Loyola, in his Spiritual Exercises, developed a detailed account of the movements of good and evil spirits in the soul, identifying specific patterns by which the enemy works differently in souls according to their spiritual state, being gentle and insinuating with those progressing in virtue and brutal and discouraging with those weakened by sin, always seeking the approach most calculated to move the person away from God and toward a settled state of spiritual indifference or rebellion. Saint John of the Cross described the demonic activity that accompanies progress in contemplative prayer, arguing that the devil intensifies his assaults precisely when a soul is making genuine advances in intimacy with God, because his fundamental aim is to prevent the deep union between the soul and God that prayer cultivates. The tradition consistently identifies three principal channels through which demonic temptation reaches the human person: the world, meaning the disordered social structures and cultural pressures that normalize sin and make virtue seem absurd; the flesh, meaning the disordered appetites and passions of fallen human nature that the devil exploits and inflames; and the devil himself, who coordinates and amplifies these other two channels through his own direct influence. The appropriate Catholic response to all three channels is the same: prayer, the sacraments, the cultivation of virtue, and the firm reliance on the grace of Christ, which the Catechism describes as sufficient for every temptation that any person faces (CCC 2849).

Extraordinary Demonic Activity: Obsession, Oppression, and Possession

Beyond the ordinary temptation that all human beings face, Catholic tradition recognizes a category of extraordinary demonic activity in which demons exercise a more intense and more direct influence over a specific person, and the Church has developed both a theological framework for understanding these phenomena and a pastoral and liturgical response to them. The tradition has generally distinguished several degrees of extraordinary demonic influence, including what it calls obsession, which refers to severe and persistent external attacks of a demonic character that harass a person without taking over their interior freedom; oppression, which describes a kind of physical or psychological affliction of demonic origin that weighs heavily on a person without constituting possession; and possession, the most extreme form, in which a demon exercises control over the person’s bodily actions, though the tradition insists consistently that the soul and the free will of the possessed person remain fundamentally their own, since the devil cannot possess the soul as such. The Church’s caution in this area is significant and deliberate: the Catechism and the pastoral tradition consistently warn against the tendency to attribute every physical or psychological difficulty to demonic influence, noting that many phenomena that might superficially resemble demonic activity have natural explanations, and that proper discernment requires the involvement of qualified pastors and, where appropriate, medical and psychological professionals (CCC 1673). A competent exorcist is trained precisely in this discernment and exercises great care to distinguish genuine demonic possession from mental illness, psychological disturbance, or other natural conditions before undertaking the formal rite.

The Church’s response to genuine extraordinary demonic activity is the Rite of Exorcism, which exists in two forms: the solemn major exorcism, reserved for cases of genuine possession and performed by a priest specifically authorized by the bishop, and the minor exorcism, which appears in the Rite of Baptism and in other blessings of the Church as a routine element of her sacramental life. The major exorcism is a formal liturgical action of the Church in which the Church’s authority over demonic forces, received from Christ himself, is exercised in the name of Jesus to command the demon to depart from the afflicted person. Jesus himself performed exorcisms throughout his public ministry, and the Gospels present them as signs of the arrival of the Kingdom of God, with Jesus explicitly connecting his power to cast out demons with the defeat of Satan’s hold on humanity: “If it is by the finger of God that I cast out demons, then the kingdom of God has come upon you” (Luke 11:20). He gave this authority to his disciples, sending them out “to cure diseases and to cast out demons” (Luke 9:1), and the Acts of the Apostles records several instances of the early Church exercising this power in Christ’s name. Pope Paul VI updated the Church’s Rite of Exorcism, and Pope John Paul II authorized a new edition in 1998, demonstrating that this ancient practice remains a living and active part of the Church’s pastoral ministry. The existence of the rite is not an embarrassment or an anachronism; it is a concrete expression of the Church’s faith that the power of Christ over the demonic world is real, present, and operative in every age through the sacramental and liturgical ministry she has received from him.

The Devil and the Fall of Humanity

The Catholic doctrine of the devil connects directly and essentially with the Church’s teaching on original sin, the fall of Adam and Eve, and the condition of wounded humanity that requires redemption, and understanding this connection illuminates both the gravity of demonic influence and the full scope of what Christ’s redemption accomplishes. The Catechism teaches that the devil played a real role in the original fall of humanity, presenting the seduction of Adam and Eve in the garden as a genuine historical event in which a spiritual being of malicious intent succeeded in inducing the first human beings to exercise their freedom against God (CCC 391, 397-398). This does not mean that the devil forced Adam and Eve or that their sin was primarily the devil’s fault rather than their own; the tradition is equally insistent that the first human beings bore genuine moral responsibility for their choice and that the introduction of sin into human history was a real act of human freedom. What the devil contributed was the temptation, the strategy, and the initial deception that made the sinful choice appear attractive rather than destructive, and his success in this effort introduced into the human condition the radical disorder, the wounded nature, the inclination toward sin, and the loss of original grace that the Church calls original sin and that Christ came to heal. The Book of Wisdom explicitly identifies the devil as the agent who introduced death into the world through envy: “God did not make death, and he does not delight in the death of the living… but through the devil’s envy death entered the world, and those who belong to his party experience it” (Wisdom 2:23-24). This text, drawn on by the Fathers and the theological tradition, situates the demonic motivation for the temptation of humanity in envy, the malicious resentment of another’s good and the desire to deprive them of it, which flows naturally from the fundamental self-love and self-enclosure of the fallen angelic will.

The connection between the devil’s activity and the condition of fallen humanity explains why the Church’s sacramental and moral life gives such sustained attention to resistance against Satan and his influence. The wounded nature that original sin introduced into humanity, the tendency toward disordered attachments and away from God that Catholics call concupiscence, meaning the inclination to prefer creaturely goods over God, provides the devil with a ready-made set of levers through which he can influence human choices without ever directly overriding human freedom. A person who has cultivated a habit of excessive attachment to money, for example, has already provided the devil with a well-worn channel of temptation that requires relatively little additional effort to exploit; a person who has cultivated the virtues of temperance, prudence, justice, and fortitude through years of consistent effort has significantly reduced the purchase that demonic temptation can find in their character. This is why the Church’s moral tradition consistently presents the spiritual life as an active and ongoing struggle that requires sustained effort, regular recourse to the sacraments, the practice of prayer and mortification, and the vigilant attention to the state of one’s soul that the examination of conscience makes possible. The devil’s activity does not create the problem of moral struggle from scratch; it exploits and intensifies a problem that the fall has already introduced into human nature, and the grace of Christ addresses both dimensions simultaneously, healing the wound of original sin and providing the power to resist the external assault of the enemy.

The Defeat of the Devil in the Paschal Mystery

The most important and most consoling truth in the entire Catholic teaching on the devil is the absolute and definitive defeat of his power through the death and resurrection of Jesus Christ, a defeat whose full consequences will be manifested at the end of time but whose reality is already fully operative in the present life of the Church and of every soul united to Christ. The Letter to the Hebrews describes the Incarnation and the death of Christ as precisely ordered toward the destruction of the devil’s power: “Since therefore the children share in flesh and blood, he himself likewise partook of the same nature, that through death he might destroy him who has the power of death, that is, the devil, and deliver all those who through fear of death were subject to lifelong bondage” (Hebrews 2:14-15). This passage presents Christ’s assumption of human mortality not as a concession to weakness but as a strategic engagement with the enemy on his own ground, a decisive entry into the domain of death in order to destroy death from within. The First Letter of John states the theological principle with breathtaking simplicity: “The reason the Son of God appeared was to destroy the works of the devil” (1 John 3:8), placing the defeat of demonic power at the very center of the mission of the Incarnation. The Book of Revelation presents the consequences of Christ’s victory in cosmic terms, describing the casting down of “the great dragon, that ancient serpent, who is called the Devil and Satan, the deceiver of the whole world” (Revelation 12:9), followed immediately by the proclamation that “the salvation and the power and the kingdom of our God and the authority of his Christ have come” (Revelation 12:10).

The defeat of the devil in the Paschal Mystery, meaning the death, resurrection, and ascension of Christ together as a single saving event, is total in its scope but not yet fully manifest in its effects, and this explains why the devil continues to exert real influence in the world even after Christ’s victory. The Catechism describes this with great precision: the victory of Christ is complete and definitive, but it will be fully and visibly manifest only at the end of time when Christ returns and the devil is cast into the lake of fire described in Revelation 20 (CCC 2853). In the present age, the period between the Resurrection and the Second Coming, the devil is “a conquered enemy” in the technical theological sense, meaning his ultimate defeat is certain and his fundamental power is broken, but he retains a real though strictly limited capacity to tempt, afflict, and oppose the work of God in the world and in individual souls. The image that best captures this situation is not that of a contest between two equal powers but of a decisive battle already won whose final terms of surrender are still being carried out. The grace of Christ available in the sacraments, in prayer, and in the life of virtue is always stronger than any demonic influence, and no soul that genuinely relies on Christ need fear being overwhelmed by the devil. Saint James states this with reassuring directness: “Resist the devil and he will flee from you” (James 4:7), and Saint Paul assures the Romans that “God will soon crush Satan under your feet” (Romans 16:20), presenting the ultimate triumph of God over the enemy as a near and certain reality rather than a distant hope.

Common Errors About the Devil and the Catholic Corrective

Several significant and widespread errors about the devil and demonic activity require explicit correction from the Catholic perspective, because these errors, whether in the direction of excessive skepticism or excessive credulity, both distort the authentic doctrine and cause real pastoral harm. The first and arguably most prevalent error in contemporary Western culture is the flat denial of the devil’s personal existence, the reduction of Satan to a symbol of evil, a literary figure representing the dark side of human psychology, or a mythological holdover from a less scientifically sophisticated age. The Catholic Church rejects this view with complete firmness, not merely as a theological opinion but as a defined truth of faith, because the denial of the devil’s personal existence directly contradicts the consistent testimony of Sacred Scripture, the solemn teaching of the Magisterium, and the words of Christ himself, who spoke about the devil in ways that only make sense if he understood him as a genuinely personal spiritual being and not a metaphor. Pope Paul VI, in a notable address to a general audience in 1972, expressed deep concern that even within the Church the devil was being treated as a symbol or a concept rather than a reality, and he reaffirmed with great pastoral urgency that the devil is a real personal being whose existence is a matter of Catholic faith and not merely a pre-modern way of speaking about evil tendencies. The Congregation for the Doctrine of the Faith, under Cardinal Joseph Ratzinger’s leadership, reiterated this point in several theological documents, insisting that the personal existence of the devil is not a question open to private theological revision.

The opposite error, which the Church equally rejects, is a form of dualism in which the devil is treated as an independent cosmic power roughly equal to God, locked in an eternal struggle with the divine in which the outcome remains genuinely uncertain. The Church’s tradition has consistently condemned dualistic views of the devil, whether ancient versions such as Manichaeanism, the system Saint Augustine engaged at length before his conversion, or more recent popular versions that present the conflict between good and evil as a balanced contest between forces of comparable strength. The devil is a creature; God is the Creator. The devil has real power; God has infinite power. The devil’s influence is genuinely worrying from the human perspective; God’s protection is absolutely reliable for those who seek it. The asymmetry between these two is not incidental but absolute, and the entire Catholic teaching on the devil only makes sense within a theological framework in which God’s sovereignty is total and unconditional. A further common error involves the attribution of all suffering, illness, failure, and misfortune to direct demonic activity, a confusion that the Church’s pastoral tradition has always warned against, because it distorts the proper understanding of natural evil, the human condition, and God’s permissive providence. Illness comes from natural causes and requires medical attention; psychological suffering has natural causes and requires appropriate therapeutic care; moral failure has its roots in human freedom and wounded nature and requires genuine repentance and sacramental healing. The devil may exploit all of these vulnerabilities, but the competent Catholic response addresses both the natural reality and, where appropriate, the spiritual dimension, rather than treating every difficulty as primarily or exclusively a demonic assault.

What the Church’s Teaching on the Devil Means for Catholics Today

The Catholic teaching on the devil and demons, received in its proper theological balance and pastoral integrity, equips the faithful with a realistic and confident understanding of the moral and spiritual life that neither denies genuine dangers nor surrenders to unnecessary fear. The first and most practically important point that flows from the full Catholic teaching is the absolute priority of trust in God’s grace over anxiety about demonic influence. A Catholic who understands that the devil is a defeated enemy, that the grace of Christ available in the sacraments and prayer is always sufficient for any temptation, and that no soul genuinely united to God can be taken by force from his care, possesses a foundation of spiritual confidence that no amount of demonic pressure can undermine. Saint Paul’s magnificent declaration that “neither death nor life, nor angels nor principalities, nor things present nor things to come, nor powers, nor height nor depth, nor anything else in all creation, will be able to separate us from the love of God in Christ Jesus our Lord” (Romans 8:38-39) is the properly Catholic emotional and spiritual response to the reality of the devil: not fear but confidence grounded in the infinite power of the love that holds the faithful in its embrace.

The practical Catholic response to the reality of the devil involves a set of specific and concrete habits of prayer, sacramental practice, and vigilant virtue that the tradition has always identified as the most effective means of resisting demonic influence in ordinary life. Regular reception of the Eucharist and frequent use of the sacrament of Reconciliation place the soul in the closest possible union with Christ, whose presence in the soul is the most powerful protection against demonic assault, because the devil cannot take hold where Christ dwells. The daily examination of conscience, taught by Saint Ignatius of Loyola as a fundamental spiritual practice, cultivates the self-awareness that allows a person to recognize the early stages of temptation and resist them before they take root in habitual patterns of thought and desire. Prayer to Saint Michael, to one’s guardian angel, and to the Blessed Virgin Mary, whose role as the enemy of the serpent is announced in Genesis 3:15, forms a natural and powerful part of the Catholic spiritual armory against demonic activity. The consistent practice of virtue, by which the soul gradually reduces the disordered attachments that provide the devil’s primary leverage over human choices, is perhaps the most sustained and effective form of spiritual resistance available to ordinary Catholics in the course of everyday life. All of these practices rest on the same foundational conviction: the devil is real, his opposition is serious, the grace of Christ is infinitely more powerful, and the faithful Catholic who lives close to Christ has nothing to fear from the one whom Christ has already defeated.

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