Becoming a new creature is not something that happens unconditionally, capriciously or for some unknown reason.
"If any man be in Christ he is a new creature" and being "in Christ" takes obedience on the part of man in submitting to baptism:
Rom 6:4: "
We were buried therefore with him by baptism into death, in order that, just as Christ was raised from the dead by the glory of the Father, we too might walk in newness of life."
This newness of life, a new creation only happens after one has obediently obey the gospel (2 Thess 1:8) in baptism whereby the old man of sin dies, is buried and raised to then walk in newness of life.
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Being a new creature requires a putting off and a putting on:
Col 3:10: "and have
put on the new self, which is being renewed in knowledge after the image of its creator."
Eph 4:24: "and to
put on the new self, created after the likeness of God in true righteousness and holiness."
The verb "put' being middle voice showing man's active involvement...'you put on" or "you have clothed yourselves"
Eph 4:22 "That ye
put off concerning the former conversation the old man, which is corrupt according to the deceitful lusts;"
AI:
"The Greek verb ἀποθέσθαι (apothesthai) is an aorist infinitive in a context that functions as an imperative/command: believers are instructed to actively lay it aside in reference to their former conduct."
- "Put Off" (ἀποθέσθαι - apothesthai): Used in verse 22, this aorist infinitive functions as a command to actively and decisively discard the former way of life. The "old self" is described as being corrupted by "deceitful desires".
- "Be Renewed" (ἀνανεοῦσθαι - ananeousthai): In contrast to the aorist "put off," verse 23 uses a present passive infinitive, indicating a continuous, ongoing process of renewal in the "spirit of your minds".
- "Put On" (ἐνδύσασθαι - endysasthai): Used in verse 24, this aorist infinitive implies a definitive "clothing" oneself with the new nature, which is created by God after His likeness in true righteousness and holiness
Col 3:8 "But now ye also
put off all these; anger, wrath, malice, blasphemy, filthy communication out of your mouth."
AI "The verb for "put them all away" is ἀπόθεσθε (apothesthe) — a clear aorist imperative (command) meaning "put off" or "get rid of."
Paul teaches a balance:
- Definitive ("you have put off" the old self through union with Christ — positional reality, e.g., Col 3:9; Rom 6:6).
- Progressive/ongoing (actively "put off" its practices daily through the Spirit's power and our obedience — Eph 4:22; Col 3:8).
"The new self isn't automatic in daily experience; believers are commanded to cooperate with God's work by rejecting the old and embracing the new."
"This is synergistic in practice (God works, we work with Him – Phil 2:12-13: "work out your own salvation... for it is God who works in you")"
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Paul is not saying man can put off/put on and become a new creature in and of himself apart from God. God creates the new creature but does so only to those that obey His will. Humans have a role:
Acts 2:38 God commanded them to repent and be baptized for remission of sins. God gave them the instructions, the means on how to put off/put on and become a new creature by repenting and being baptized. They are then told to "save yourselves". They would not save themselves by themselves but save themselves in the sense in doing what God commanded them. They had a role in their own salvation.
God graciously gave them a way to walk in newness of life as a new creature, it was up to them to do as God's grace required.
It would therefore be impossible for them to become a new creature in Christ apart from God's grace and their obedience to God's will. It takes BOTH God's grace and man's obedience.
Submitting to God's will in putting off/putting on is man only doing what is his duty to do, it is nothing to boast about...Lk 17:10:
"So likewise ye, when ye shall have done all those things which are commanded you, say, We are unprofitable servants: we have done that which was our duty to do."