The Mortification of Sin: A Comprehensive Exploration
John Owen’s seminal work delves into the perpetual human struggle against inner wickedness, asserting that believers face a continuous, lifelong battle against immorality within themselves.
Historical Context of John Owen and His Work
John Owen (1616-1683) was a prominent English Nonconformist theologian, academic administrator, and Puritan preacher. He lived during a turbulent period in English history, marked by the English Civil War and the subsequent Interregnum. Owen served as Vice-Chancellor of the University of Oxford and Dean of Christ Church, but was ejected from both positions during the Restoration due to his Puritan beliefs.
His theological work was deeply influenced by Calvinism and a strong emphasis on biblical interpretation. Owen’s writings, including “The Mortification of Sin,” arose from a desire to equip believers with practical tools for spiritual growth and overcoming temptation. The context of religious and political upheaval fostered a climate where self-examination and a rigorous pursuit of holiness were highly valued within Puritan circles. Owen’s scholarship and pastoral concern combined to produce a lasting legacy in Christian thought.
The Puritan Emphasis on Self-Examination
Puritan theology placed immense importance on the practice of diligent self-examination. This wasn’t merely introspection, but a rigorous, honest assessment of one’s heart, motives, and actions in light of Scripture. They believed that genuine faith inevitably produced fruit, and careful self-scrutiny was essential to discern whether that fruit was present.
This emphasis stemmed from a deep conviction of human depravity and the pervasive nature of sin. Puritans weren’t seeking to earn salvation through self-improvement, but to understand the ongoing work of grace in their lives. Owen’s work on mortification builds directly upon this foundation, providing a framework for identifying and actively combating sinful inclinations revealed through self-examination. It was considered a vital spiritual discipline, fostering humility and dependence on God’s mercy.
The Core Argument: The Believer’s Ongoing Struggle
Owen’s central thesis revolves around the idea that the Christian life isn’t a swift victory over sin, but a protracted, relentless warfare. He vehemently rejects the notion that believers can achieve complete freedom from indwelling sin in this lifetime. Instead, he argues for a continuous process of “mortification” – actively putting sin to death – as a defining characteristic of genuine faith.
This struggle isn’t a sign of spiritual failure, but rather evidence of the believer’s realistic assessment of their own condition and their reliance on God’s power. Owen stresses that this isn’t a battle fought in our own strength, but through the enabling grace of the Holy Spirit; The ongoing conflict demonstrates the believer’s commitment to holiness and their desire to honor Christ.
Defining “Mortification” in Owen’s Theology
For Owen, mortification isn’t merely suppressing sinful desires or avoiding outward acts of transgression. It’s a radical, internal process – a spiritual “slaying” of the power of sin within the believer. He defines it as the weakening of the “root and rise” of all sinful inclinations, rendering them less powerful and influential over time.
This isn’t a single event, but a consistent, deliberate effort fueled by faith and empowered by the Holy Spirit. It involves actively resisting temptation, refusing to indulge sinful thoughts, and continually directing one’s affections towards God. Owen emphasizes that true mortification aims at the heart, transforming desires and motivations, not just modifying behavior. It’s a vital component of spiritual growth and conformity to Christ.
Distinguishing Mortification from Legalism
Owen strongly cautions against conflating mortification with legalistic striving. Legalism focuses on outward conformity to rules, driven by a desire to earn God’s favor. Mortification, however, stems from gratitude for God’s grace and a desire to please Him from a renewed heart.

The legalist seeks to suppress sin through willpower and self-discipline, while the believer relies on the power of the Holy Spirit. True mortification isn’t about achieving a perfect record, but about honestly confronting sin and continually submitting to God’s transforming work. It acknowledges inherent weakness and dependence on divine enablement, unlike legalism’s self-righteous approach. It’s freedom from sin’s dominion, not bondage to rules.
The Role of Grace in the Process of Mortification
Owen emphatically asserts that mortification is entirely dependent on God’s grace. It isn’t a human achievement, but a work of the Holy Spirit within the believer. Grace provides the initial conviction of sin, the desire for holiness, and the power to overcome temptation. Without divine enablement, any attempt at mortification will inevitably fail, devolving into either despair or self-righteousness.
This grace isn’t merely a starting point, but a continuous, sustaining force throughout the entire process. Believers must actively rely on God’s strength, recognizing their own inherent weakness. Mortification isn’t about trying harder, but about trusting more in the sufficient grace offered through Christ. It’s a humble acknowledgement of dependence, fueled by gratitude for unmerited favor.
Identifying the Root of Sinful Inclinations
Owen stresses the crucial importance of discerning the underlying causes of our sinful behaviors. Superficial repentance, addressing only outward manifestations, is insufficient. True mortification demands a relentless pursuit of the root – the desires, fears, and worldly affections that fuel our transgressions. These roots often lie hidden within the heart, masked by rationalizations and justifications.
This requires honest self-examination, aided by the illuminating power of Scripture and the convicting work of the Holy Spirit. We must ask not just what we did, but why we did it. What unmet need, what distorted desire, drove us to sin? Identifying these foundational inclinations is essential for targeted, effective mortification, allowing us to address the source, not merely the symptoms.
Understanding the “Old Man” and the “New Man”
Central to Owen’s framework is the Pauline concept of the “Old Man” and the “New Man.” The “Old Man” represents our inherent sinful nature, corrupted by the Fall, and dominated by selfish desires. This is the source of all our sinful inclinations, constantly striving to regain control. Conversely, the “New Man,” created in Christ through regeneration, embodies righteousness and holiness.
Mortification isn’t about eradicating our nature, but crucifying the “Old Man” – putting to death its influence and empowering the “New Man” to flourish. This isn’t a one-time event, but a continuous process of yielding to the Spirit and resisting the flesh. Recognizing this internal duality is vital; we are simultaneously saints and sinners, battling for dominion within.
The Importance of Self-Awareness and Discernment
Owen emphatically stresses the necessity of rigorous self-examination. Before effectively mortifying sin, believers must cultivate a keen awareness of their own thoughts, desires, and motivations. This isn’t introspection for the sake of self-pity, but a discerning assessment of the “Old Man’s” activity within. We must identify the specific sins to which we are prone, the subtle ways they manifest, and the triggers that incite them.
Discernment is equally crucial. Not every negative feeling or inclination is sinful; we must distinguish between temptation, conviction, and genuine spiritual warfare. Without accurate self-awareness and discernment, our efforts at mortification will be misdirected, ineffective, or even counterproductive, potentially leading to legalism or despair.
Practical Steps Towards Mortifying Sin (Part 1)
Owen outlines a proactive approach to sin-killing, beginning with resolute determination. We must actively will to be rid of specific sins, not merely wish they would disappear. This involves identifying a particular inclination and committing to opposing it with all our strength, fueled by the grace of God.
Next comes diligent observation. Closely monitor the moments when the targeted sin gains strength – what circumstances, thoughts, or feelings precede it? Then, interrupt the sinful pattern as soon as it arises. Don’t allow it to take root and flourish; immediately challenge it with truth and resist its pull. This initial interruption is vital.

The Weapon of Spiritual Warfare: Prayer
Prayer, for Owen, isn’t simply a request for help, but a central weapon in mortifying sin. It’s through fervent, believing prayer that we access the power of God to overcome our weaknesses. We must specifically petition for strength to resist temptation, confessing our vulnerabilities and seeking divine assistance in the heat of battle.

Owen emphasizes the importance of wrestling with God in prayer, not passively awaiting His intervention. This involves persistent supplication, a refusal to give up until grace is bestowed. Furthermore, prayer should be coupled with a humble acknowledgement of our dependence on God, recognizing that victory is solely through His power, not our own efforts.
The Power of Scripture in Combating Temptation
Owen powerfully asserts that Scripture is an indispensable tool in the mortification of sin, functioning as both a revealing mirror and a potent weapon. The Word of God exposes the deceitfulness of our hearts, unveiling the hidden roots of our sinful inclinations. It simultaneously provides the truth necessary to refute temptation and establish a firm foundation for righteous living.
Memorizing and meditating on relevant passages allows believers to counter Satan’s lies with God’s truth. Scripture equips us to recognize sinful patterns, understand their consequences, and embrace the liberating power of the Gospel. Owen stresses that simply reading Scripture isn’t enough; it must be actively applied to our daily struggles, shaping our thoughts and actions.

Practical Steps Towards Mortifying Sin (Part 2)
Building upon foundational principles, Owen outlines further practical steps for consistent progress. This involves diligently watching over one’s heart, proactively identifying and interrupting sinful thoughts before they blossom into actions. He emphasizes the importance of immediately confessing any failures to God, seeking His forgiveness and strength to resist future temptations.
Furthermore, cultivating a spirit of humility is crucial, recognizing our utter dependence on God’s grace. Owen advocates for replacing sinful habits with godly ones, intentionally engaging in activities that nurture spiritual growth. This includes consistent prayer, diligent study of Scripture, and fellowship with other believers, fostering accountability and mutual encouragement in the ongoing battle.
Disciplining the Mind and Thoughts
Owen stresses that the battlefield of mortification is often won or lost within the mind. He argues that sinful desires initially manifest as thoughts, and allowing these thoughts to dwell is akin to nurturing a dangerous fire. Therefore, believers must actively engage in “spiritual watchfulness,” scrutinizing their thoughts and immediately challenging those that are contrary to God’s will.
This discipline isn’t about suppressing thoughts, but rather about refusing to entertain them. Owen suggests replacing ungodly thoughts with Scripture, focusing on truth and allowing it to reshape one’s perspective. He emphasizes the power of meditation on God’s Word, allowing it to permeate the mind and influence affections, ultimately leading to a transformed life.
Cultivating Spiritual Habits and Practices
Owen firmly believed that mortification isn’t a one-time event, but a lifelong process sustained by consistent spiritual disciplines. He advocates for establishing habits that actively weaken the power of sin and strengthen one’s reliance on God’s grace. Regular prayer, diligent study of Scripture, and consistent self-examination are foundational practices.

Furthermore, Owen encourages believers to incorporate practices like fasting and solitude into their routines. These disciplines create space for deeper communion with God and provide opportunities to confront personal weaknesses. He stresses the importance of intentionality, urging readers to schedule these practices and guard them diligently, recognizing they are vital tools in the ongoing battle against sin.
The Role of Affections in Sin and Mortification
John Owen profoundly understood that sin isn’t merely an intellectual error, but deeply rooted in the affections – our desires, passions, and emotions. He argues that sinful inclinations gain strength when fueled by misplaced affections, becoming powerfully persuasive. Mortification, therefore, necessitates addressing the heart, not just restraining outward actions.

Owen emphasizes that affections aren’t inherently evil; they are powerful forces that can be directed towards God. The goal isn’t to eliminate affections, but to purify and redirect them, aligning them with godly desires. This involves cultivating a love for righteousness and a hatred for sin, allowing these affections to drive a pursuit of holiness and fuel the mortification process.
Controlling and Redirecting the Heart’s Desires
Owen posits that the heart’s desires are the engine of sin, and thus, controlling them is central to mortification. This isn’t achieved through sheer willpower, but through a renewed mind and a transformed perspective, fueled by the grace of God. We must actively challenge and dismantle sinful desires, recognizing their deceptive nature and ultimately rejecting their allure.
Redirection is equally crucial. Instead of simply suppressing desires, Owen advocates for replacing them with holy affections – a longing for God, a passion for righteousness, and a love for others. This requires intentional cultivation of spiritual disciplines and a consistent focus on eternal realities, allowing God to reshape the heart’s inclinations.
The Importance of a Renewed Will
John Owen emphasizes that a renewed will is not merely a component of mortification, but its very foundation. The will, corrupted by sin, readily consents to temptation; therefore, its restoration is paramount. This renewal isn’t self-achieved, but a work of divine grace, empowering believers to actively choose obedience over indulgence.

A strengthened will enables resolute resistance against sinful impulses, fostering a determined pursuit of holiness. It’s about actively choosing to align one’s desires with God’s will, even when facing difficulty. Owen stresses that mortification demands a conscious, deliberate act of the will, consistently directing affections and actions towards Godly pursuits, ultimately breaking the power of ingrained sinful habits.
Common Obstacles to Mortification
Owen identifies several pervasive obstacles hindering the process of mortifying sin. Self-reliance, believing one can overcome sin through sheer willpower, proves a significant impediment, neglecting the necessity of divine grace. Discouragement, arising from repeated failures, can lead to resignation and abandonment of the struggle.
Furthermore, unbelief – doubting God’s power to deliver – weakens resolve and fosters complacency. Ignorance of one’s own heart, failing to recognize subtle sinful tendencies, allows them to flourish undetected. Finally, a lack of consistent spiritual discipline, neglecting prayer and scripture, diminishes the strength needed to resist temptation, creating fertile ground for sin to take root and grow.
Dealing with Discouragement and Failure
Owen emphasizes that experiencing discouragement and failure is inevitable in the lifelong pursuit of mortification. He cautions against viewing setbacks as evidence of spiritual defeat, but rather as opportunities for deeper reliance on God’s grace. Acknowledging our weakness and confessing sin are crucial steps toward restoration.
Remembering the finished work of Christ on the cross provides solace and renewed strength. Focusing on God’s faithfulness, rather than our own failings, combats despair. Furthermore, Owen urges believers to learn from their failures, identifying the specific triggers and patterns that led to sin, and adjusting their strategies accordingly. Persistent, humble pursuit, even amidst repeated stumbles, demonstrates genuine faith.
The Danger of Self-Reliance
John Owen powerfully warns against the subtle, yet pervasive, danger of self-reliance in the process of mortifying sin. He argues that attempting to overcome sin through sheer willpower or personal discipline, devoid of God’s enabling grace, is ultimately futile. Such efforts, while appearing virtuous, merely mask a deeper pride and independence from God.
True mortification stems from a humble recognition of our utter helplessness without Christ. Relying on our own strength fosters a false sense of security and hinders genuine spiritual growth. Owen stresses that the believer’s role is to yield to the Spirit’s power, not to manufacture holiness independently. A constant awareness of our dependence on God is paramount for sustained victory.
The Relationship Between Mortification and Sanctification
John Owen meticulously clarifies the inseparable link between mortification and sanctification, demonstrating they are not sequential steps but concurrent aspects of a single, transformative process. Mortification – the putting to death of sin – is not merely a preliminary stage to sanctification, but an essential component of it.
Sanctification, the progressive conforming to Christ’s image, cannot advance without the active suppression of sinful desires and habits. As the “old man” is crucified, the “new man” is empowered to flourish. Owen emphasizes that growth in grace is inextricably tied to the diminishing influence of indwelling sin. God’s work of sanctification actively includes, and necessitates, the believer’s participation in mortification.
Progressive Sanctification as a Lifelong Journey
Owen powerfully illustrates that sanctification isn’t a sudden, completed event, but a gradual, lifelong progression marked by continual struggle and dependence on God’s grace. Mortification, therefore, isn’t a one-time achievement, but a persistent, daily discipline. Believers should anticipate ongoing battles with sin throughout their earthly existence, recognizing that complete freedom from its influence awaits glorification.
This progressive nature demands humility and perseverance. Owen cautions against expecting instant perfection, emphasizing the importance of consistent effort and reliance on the Holy Spirit’s power. The journey involves repeated cycles of confession, repentance, and renewed commitment to pursuing holiness, acknowledging that setbacks are inevitable but not insurmountable.
The Ultimate Goal: Conformity to Christ
John Owen posits that the overarching aim of mortification isn’t merely to suppress sinful behaviors, but to cultivate a deeper, transformative conformity to Christ’s likeness. This isn’t achieved through self-effort alone, but through the enabling power of the Holy Spirit, working within the believer to reshape their thoughts, desires, and actions.
True mortification, therefore, is inextricably linked to positive growth in grace. As sin is put to death, Christ is increasingly manifested in the life of the believer. This pursuit of conformity isn’t about legalistic adherence to rules, but a heartfelt longing to reflect Christ’s character in all aspects of life, becoming more like Him in thought, word, and deed.
The Enduring Relevance of “Mortification of Sin” Today
Owen’s treatise remains profoundly relevant in a contemporary world saturated with distractions and temptations. Despite societal shifts, the fundamental human struggle against indwelling sin persists, making his insights invaluable for modern Christians. The book offers a robust framework for understanding the nature of temptation and provides practical strategies for resisting it, applicable regardless of cultural context.
In an age of instant gratification and self-focus, the call to self-denial and a relentless pursuit of holiness resonates powerfully. “Mortification of Sin” challenges believers to move beyond superficial piety and engage in a genuine, lifelong battle for spiritual transformation, fostering a deeper relationship with Christ.
Applying Owen’s Principles in Modern Life
Translating Owen’s rigorous principles into daily living requires intentionality and discipline. Modern applications involve actively identifying personal temptations – whether through social media, consumerism, or relational dynamics – and employing spiritual disciplines like prayer and Scripture meditation to combat them.
Furthermore, cultivating a community of accountability can provide vital support and encouragement. Regularly confessing sins to trusted believers and seeking their guidance fosters transparency and strengthens resolve. Owen’s emphasis on self-awareness encourages consistent self-examination, prompting believers to honestly assess their motives and affections, aligning them with Christ’s character.
Resources for Further Study and Application
For deeper engagement with Owen’s thought, readily available editions of “The Mortification of Sin” are accessible in both print and PDF formats online. Complementary works by Puritan authors like Richard Sibbes and William Amyrald offer further insights into sanctification and spiritual warfare;
Numerous websites and podcasts dedicated to Puritan theology provide valuable commentary and application of Owen’s principles. Consider exploring resources from organizations focused on biblical counseling and discipleship. Additionally, studying biographies of individuals who exemplified a life of disciplined holiness can inspire practical application and demonstrate the transformative power of mortification in everyday life.
