Theological term
Mortification
39 sermons · All terms
The Revelation of God's Glory
Exodus 34:6–7 reveals the attributes of God not in the abstract but in the wake of the catastrophic covenant-breaking of the golden calf — making the declaration of divine mercy, grace, long-suffering, and forgiveness all the more staggering. This sermon works through the context of Exodus 32–33 to show that God meets great sin with greater grace, and that sovereign grace is not a theological concession but the very content of the divine name. The same passage that grounds Moses' intercession grounds the call to flee to Christ, who accomplishes what Moses could only typify: atonement for covenant-breakers.
Run with Endurance
Hebrews 12:1 calls believers to run with endurance the race set before them — not a sprint, but a lifelong, disciplined pursuit of Christ through every obstacle and trial. This Bible study exposition works through the duty stated in verse 1, the two obstacles to lay aside (encumbering weights and ensnaring sin), the nature of Christian endurance as distinct from mere stoic grit, and the kindness God shows in repeatedly exhorting his people rather than cutting them off. The central incentive examined is the great cloud of witnesses from Hebrews 11, whose collective testimony is not that they are cheering from the stands but that God is faithful — a truth that grounds and motivates the runner's perseverance.
True Doctrine, Proper Conduct Part 2
Colossians 3:12–14 calls believers to put on the virtues that characterize the new man in Christ — not as a program of moral self-improvement, but as the necessary outflow of sovereign election, regeneration, and union with Christ. This sermon works through three things concerning the new man: his identity as the elect, holy, and beloved of God; his character as defined by five virtues (tender mercies, kindness, humility, meekness, and longsuffering) expressed in community through forbearance and forgiveness; and his supreme obligation, which is love — the bond that gives luster and coherence to all the other graces. The controlling argument is that conformity to Christ begins not with behavioral resolve but with fixing the mind on Christ seated at the right hand of God, so that mortification of sin and putting on of virtue follow as fruit of knowing him.
Our Changed Resurrected Bodies
What kind of body will believers receive at the resurrection, and why must it be so radically different from the body that dies? Expounding 1 Corinthians 15, this sermon argues that the resurrection body is not merely restored to pre-mortem condition or even to Adamic perfection, but is transformed into conformity with Christ's own glorified body — physically, morally, and in full capacity for the beatific enjoyment of God. The driving application is that this eschatological hope is God's appointed means of promoting present holiness: those who truly desire to be like Christ hereafter will pursue Christlikeness now, mortifying sinful desires and setting their minds on things above.
The Works of the Flesh
Galatians 5:19–21 presents Paul's catalog of the works of the flesh as a concrete definition of what it means to fail to walk in the Spirit — the very Spirit given to those justified by faith alone. This exposition works through four categories of fleshly sin: sexual immorality, religious apostasy, disorders in personal relationships, and intemperance, drawing on the Westminster Larger Catechism to illuminate each category's depth and breadth. The critical distinction the sermon presses is between remaining corruption (the struggle every believer knows) and reigning corruption (the habitual, unrepentant practice that marks the unconverted). The sermon closes by directing hearers to the active obedience and atoning death of Christ as the only ground of hope in the face of this condemning list.
Walk in the Spirit
Galatians 5:16–18 presents both a command and a doctrine: walk in the Spirit, and understand why that walk is a struggle. The sermon defines walking in the Spirit not as a mystical or charismatic experience but as Spirit-directed conduct expressed in love, light, and wisdom — drawing on Ephesians 5 to fill out what Paul means. The second half of the sermon treats the doctrine of remaining corruption, distinguishing it carefully from reigning sin, and shows from Romans 7 and the 1689 London Baptist Confession that the ongoing flesh-Spirit conflict in the believer is both inevitable and, rightly understood, an evidence of genuine faith. Hearers are called to mortify remaining sin by the Spirit's power, to cast themselves afresh on Christ's blood when they fall, and to examine honestly whether their sin is remaining corruption or the reigning corruption of an unbeliever.
The Believer's Race
Hebrews 12:1 calls believers to run with endurance the race set before them, laying aside every encumbering weight and the sin that so easily ensnares. This exposition works through the believer's duty to persevere, the obstacles that must be stripped away, and the manner in which the race is to be run — with steady, joyful endurance rather than fitful bursts of zeal. The first of three incentives for faithful running is examined: the great cloud of witnesses from Hebrews 11 and beyond, whose consistent testimony is not mere spectatorship but sworn witness that God is faithful to those who press on to the end. Hearers are called to repent of sluggishness, believe the gospel, and run — not by jet or celestial railroad, but as Christian ran in Pilgrim's Progress, pressing forward through trial toward the upward call of God in Christ Jesus.
Conduct Unbecoming a New Man
Colossians 3:5–11 calls believers to put to death sins of the flesh and put off sins of the tongue as conduct unbecoming of the new man in Christ. The sermon works through two parallel sections: the cluster of sexual sins (fornication, uncleanness, passion, evil desire, covetousness) rooted in idolatry, and the sins of speech (anger, wrath, malice, slander, filthy language, lying) rooted in corrupt internal dispositions. Throughout, the preacher insists that the motive for mortification is not moralism but gospel indicative — the old man is dead, the new man is being renewed in knowledge according to the image of his Creator. The closing application presses both the unconverted and the baptized: acting like a Christian does not make one a Christian; salvation rests entirely on the finished work of Christ, and only from that ground does holy conduct flow.
The Doctrine of Sanctification
Philippians 2:12–13 grounds the doctrine of sanctification in both divine sovereignty and human responsibility: God works in believers both to will and to do for his good pleasure, and on that basis Paul commands the church to work out their salvation with fear and trembling. This sermon expounds those two verses and then surveys the historic Reformed distinction between justification and sanctification, drawing at length from J.C. Ryle's Holiness to show how the two doctrines are alike in origin yet differ in nature, completeness, and progression. The practical thrust is that genuine justification necessarily produces sanctification — growth in conformity to Christ through the Spirit, the Word, and the means of grace — and an absence of any such growth calls one's justification into question.