Conversion and the New Man
3. Mortify Your Members: The First War Against the New Man's Enemies
A gate in the exiled city.
"Mortify therefore your members which are upon the earth." - Colossians 3:5
St. Paul does not tell the Christian to negotiate with the old life. He tells him to mortify it. That word has almost vanished from modern speech because modern religion prefers management, accommodation, and gentle redirection. But the Apostle speaks in the language of death.
That matters because some sins are not overcome by explanation. They must be attacked. Impurity, greed, wrath, filthy speech, and lying are not politely re-educated into holiness. They are mortified.
This is one of the clearest places where Catholic conversion parts company with the therapeutic age. The new man is not formed by endless self-description. He is formed by warfare against what would destroy him.
Colossians names the enemies directly: fornication, uncleanness, lust, evil concupiscence, avarice, anger, indignation, malice, blasphemy, filthy speech, and lies.[1] The list is important because it is concrete. St. Paul refuses vague conversion.
He also ties these sins to the old man and his deeds.[2] That means mortification is not random harshness toward oneself. It is the stripping off of what belongs to the former dominion.
Scripture therefore gives the law in unmistakable terms: kill what belongs to sin before it kills charity in you.
Catholic tradition has always treated mortification as necessary because the wounds of sin are real. The saints fast, restrain speech, govern the senses, discipline sleep, limit curiosity, and refuse occasions of sin not because they despise creaturely life, but because they know disorder is strong.
That matters because the age is allergic to the idea that something in us deserves contradiction. It wants every impulse respected, interpreted, or soothed. St. Paul says the opposite. Some things in us must be put to death.
The Church has always taught this without confusion. Mortification is not hatred of the body as such. It is hatred of disorder. It is not contempt for created goods. It is refusal to let them rule.
Where Catholic reform has been real, mortification has always returned. The saints recover fasting, custody of the tongue, guarded eyes, disciplined schedules, simpler food, simpler dress, and firmer penance. They do not do this as spectacle. They do it because they know the old man lies.
The false church cannot teach this well because it has made peace with indulgence. It fears strong language about lust, greed, vanity, and wrath because it fears losing modern approval. But St. Paul is not trying to keep the world's approval.
This is why the remnant must recover the Apostolic severity. A people without mortification becomes doctrinally sharp and morally soft. That is not the new man.
The remnant should therefore apply mortification concretely.
- if speech is filthy, sharp, vain, or constant, mortify the tongue;
- if appetite governs the day, mortify the table;
- if impurity has entered through eyes or imagination, mortify curiosity and access;
- if possessions rule the heart, mortify acquisition and display;
- if anger is nursed as personality, mortify grievance and dramatic self-defense.
This also means refusing the excuses that dominate modern Catholic speech:
that is just how I amI need to express myselfat least I see the crisis clearlyI am under too much stress for discipline
None of those sentences mortify anything. They shelter the old man.
Mortification is one of the first unmistakable signs that conversion has become serious. The soul stops merely discussing disorder and begins striking at it.
The remnant should therefore not fear this language. St. Paul uses it because the old man will not yield politely. He must be contradicted until Christ rules more visibly in the soul.
For the next Pauline movement, continue with Put On Bowels of Mercy: Forgiveness, Forbearance, and the Bond of Perfection.
Footnotes
- Colossians 3:5-10.
- Colossians 3:9-10.
- St. Thomas Aquinas, Summa Theologiae, II-II, q. 147, a. 1; St. Alphonsus Liguori, The True Spouse of Jesus Christ, on mortification and custody of the senses.
See also Colossians 3:5-10: Mortify Your Members and the Stripping of the Old Man.