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Catholic Commentary
Putting Off the Old Man, Putting On the New
20But you didn’t learn Christ that way,21if indeed you heard him and were taught in him, even as truth is in Jesus:22that you put away, as concerning your former way of life, the old man that grows corrupt after the lusts of deceit,23and that you be renewed in the spirit of your mind,24and put on the new man, who in the likeness of God has been created in righteousness and holiness of truth.
Ephesians 4:20–24 calls believers to discard the old, corrupted Adamic self governed by deception and desire, and to put on a renewed spiritual identity modeled on Christ and oriented toward righteousness and holiness. The transformation involves removing the former sinful orientation, allowing the spirit of one's mind to be renewed inwardly, and embracing the restored divine image manifested in Jesus.
The Christian life is not self-improvement but self-replacement—stripping away the decaying old self and clothing yourself in the risen Christ.
Verse 23 — "Be renewed in the spirit of your mind" Between the putting-off and putting-on comes an interior transformation: "be renewed" (ananeoūsthai) is a present passive infinitive — continuous, ongoing, and received, not self-generated. The "spirit of your mind" (tō pneumati tou noos hymōn) is a remarkable phrase. The nous (mind, reason, the faculty of moral discernment) must itself be renewed at the level of its animating pneuma — suggesting that ethical renewal is not merely behavioral or even cognitive, but reaches into the deepest spiritual orientation of human consciousness. This is the interior renewal that makes exterior "putting on" authentic rather than mere moralism.
Verse 24 — "Put on the new man, who in the likeness of God has been created" The "new man" (kainos anthrōpos) is explicitly Christological: he has been "created in the likeness of God" (kata theon ktisthenta), an unmistakable echo of Genesis 1:26–27. Where the old man is the image of God corrupted by the Fall, the new man is that image restored and surpassed — not a return to Eden but an eschatological advance. The twin coordinates of this new creation are "righteousness" (dikaiosynē) and "holiness of truth" (hosiotēti tēs alētheias): righteousness as right relation to God and neighbor, holiness as consecrated otherness, both qualified by "truth" — the same truth that is "in Jesus" (v. 21). The garment of the new man is thus the character of Christ himself.
Catholic tradition reads these verses through the lens of baptismal ontology — the conviction that the sacrament of Baptism does not merely forgive sin but effects a real, ontological change in the person. The Catechism of the Catholic Church teaches that Baptism makes the believer a "new creature," a "child of God," and incorporates them into the Body of Christ (CCC 1265–1266). Ephesians 4:22–24 is the scriptural heartbeat of this teaching: the "putting off" and "putting on" are not metaphors for moral effort but descriptions of what Baptism accomplishes sacramentally and what the Christian life actualizes continually.
St. John Chrysostom, commenting on this passage, insists that the "old man" is not the body (against gnostic readings) but the soul's praxis — its settled habits of sin. The body is not evil; disordered desire is. This is consonant with the Catholic rejection of Manichaean dualism: matter and body belong to the good creation restored in Christ.
St. Thomas Aquinas (Commentary on Ephesians, lect. 6) links verse 23 to the virtue of prudentia — the renewal of the nous is the renewal of the very faculty by which practical moral wisdom operates. Without this interior renewal, moral effort becomes Pelagianism.
The Council of Trent (Session VI, Decree on Justification, ch. 7) affirms that justification involves not merely the remission of sins but the sanctification and renewal of the interior person — a direct echo of Paul's "be renewed in the spirit of your mind."
The image of "putting on" (v. 24) resonates with the white garment given at Baptism, a tangible liturgical sign of the new man. Pope Benedict XVI (Spe Salvi, §26) speaks of how Christian hope is not merely future but transforms the present person — precisely what this passage envisions in the ongoing renewal of the baptized.
For a contemporary Catholic, this passage challenges the therapeutic culture's assumption that the self is fundamentally healthy and only needs affirmation. Paul insists the pre-grace self is actively decaying — not because human nature is evil, but because it is wounded and enslaved to lies that masquerade as fulfillment. The discipline of "putting off" is therefore not self-rejection but self-liberation.
Practically, this passage calls Catholics to examine where the "lusts of deceit" operate in their lives — not only obvious vices, but subtler distortions: the lie that productivity equals worth, that comfort is the highest good, that identity is self-constructed. These are the specifically modern faces of the "old man."
The "putting on" finds its most concrete Catholic form in the sacramental life: Confession repeatedly removes what clings to the old man; the Eucharist nourishes the new. Daily examination of conscience, rooted in Scripture and prayer, is the practical form of verse 23's "renewal of the mind." St. Ignatius of Loyola's Daily Examen is a direct spiritual application of precisely this Pauline logic.
Commentary
Verse 20 — "But you did not learn Christ that way" The adversative "but" (Greek: hymeis de) is emphatic, cutting against the portrait of Gentile futility just drawn in vv. 17–19. The phrase "learn Christ" (emathete ton Christon) is grammatically striking: Christ is not the subject of learning but its object and content. Paul does not say they learned about Christ or learned from Christ — they learned Christ himself. This is not intellectual catechesis alone; it is personal, participatory knowledge of a person. The verb manthanō carries the sense of discipleship shaped by ongoing formation, echoing the rabbinic notion of learning as a way of life under a master.
Verse 21 — "If indeed you heard him and were taught in him, even as truth is in Jesus" Paul qualifies with "if indeed" (ei ge) — not expressing doubt but rhetorical confidence, reminding readers of the weight of their initiation. The parallel verbs "heard him" and "were taught in him" move from encounter (hearing, presumably in baptismal proclamation and catechesis) to immersion ("in him," en autō). The sudden shift from "Christ" (v. 20) to the personal name "Jesus" is deliberate and rare in Paul's letters: it grounds the cosmic and ecclesial "Christ" in the concrete, historical, incarnate person. Truth is not an abstraction but is located in Jesus, in his flesh and history. This anticipates the Johannine "I am the way, the truth, and the life" (Jn 14:6) and anchors Christian ethics in Christology, not merely in moral philosophy.
Verse 22 — "Put away…the old man that grows corrupt after the lusts of deceit" The infinitive "put away" (apothesthai) is aorist, suggesting a decisive, definitive action — not a gradual fading but a removal, like taking off a garment (the clothing metaphor is explicit by v. 24). The "old man" (palaios anthrōpos) is Paul's personification of the pre-baptismal self, the Adamic humanity in its fallen solidarity. Three elements define this old man: (1) it belongs to a "former way of life" (tēn proteran anastrophēn), a whole orientation of existence; (2) it is "growing corrupt" (phtheiromenon), a present participle denoting ongoing decay — the old man is not merely old but actively rotting; (3) its engine is "the lusts of deceit" (tais epithumiais tēs apatēs), desires animated by deception, a spiritual lie at the core of sinful selfhood. This echoes Genesis 3: the serpent's deceit produced disordered desire; Paul's "old man" is precisely the Adamic self seduced by that original lie.