Short answer
“You were taught, with regard to your former way of life, to put off your old self, which is being corrupted by its deceitful desires; to be renewed in the spirit of your minds; and to put on the new self, created to be like God in true righteousness and holiness.” (BSB)
That is the heart of the passage. The old life is to be left behind. The new life is to be worn visibly in everyday conduct.
Read the passage in context
Ephesians 4 begins the practical turn in the letter. The first three chapters focus on what God has done in Christ: grace, reconciliation, unity, and the creation of one people. Chapter 4 turns that theology into a way of life.
So when Paul says, “walk no longer as the Gentiles do,” he is not making a random insult or a side comment about ethnicity. He is contrasting two ways of living: a life shaped by alienation from God, and a life shaped by the new humanity God has formed in Christ.
That is why verses 17–24 lead directly into verses 25–32. Paul is preparing the reader for very ordinary Christian obedience: truth-telling, anger handled rightly, honest work, careful speech, and forgiveness. The “put off” and “put on” language is a summary of that whole pattern.
What each part of the passage is doing
| Verses | What Paul is saying |
|---|---|
| 17–19 | Do not keep living in the futility, darkened understanding, and moral hardening of the old life. |
| 20–21 | That is not how you learned Christ; you were taught the truth that is in Jesus. |
| 22 | Put off the old self, the former way of life shaped by corrupt desires. |
| 23 | Be renewed in the spirit of your minds; let your inner thinking be reshaped. |
| 24 | Put on the new self, created according to God in righteousness and holiness. |
What “put off the old self” means
The “old self” is more than a few bad habits. Paul is talking about the whole former pattern of life: the way a person thinks, wants, chooses, speaks, and relates to others when life is still ruled by sin and distance from God.
Some readers describe the old self as the old humanity in Adam. Others explain it as the believer’s former life before faith. Those readings are not rivals so much as different angles on the same truth. Either way, Paul is saying that the old way of being human does not get to set the terms anymore.
What “put on the new self” means
The new self is not fake spirituality and not mere behavior management. Paul says it is “created to be like God in true righteousness and holiness.” That means the change begins with God’s action and then shows up in real conduct.
This is why the next verses matter. The new self tells the truth. The new self handles anger without giving it room to rot. The new self works honestly. The new self speaks in a way that builds others up. The new self forgives because Christ has forgiven.
That is a concrete picture, not an abstract ideal.
Why verse 23 matters so much
Paul does not stop at outward behavior. He says believers must be “renewed in the spirit of your minds.” Different translations phrase that slightly differently, but the point is the same: the inner center of thinking, valuing, and deciding must be reshaped.
Christian change is not only about stopping certain actions. It is about learning a new way to see God, yourself, other people, and sin. That inward renewal is what makes the outward commands possible.
A simple way to read the passage
- The change is rooted in what God has already done.
- The change affects both identity and conduct.
- The change is personal, but not private; Ephesians keeps pointing to the church as a renewed people.
- The change is ongoing, because believers still need to keep leaving old patterns behind.
Common misreadings to avoid
A common mistake is to reduce the “old self” to one or two visible sins. Paul is describing a whole old way of life, not a short list of bad behavior.
Another mistake is to treat the “new self” as an inner feeling with no outward shape. In this passage, renewal reaches speech, work, relationships, and worshipful holiness.
A third mistake is to make the passage about willpower alone. Paul places these commands inside the larger story of grace. The command matters, but it rests on the new reality God has created.
A fourth mistake is to hear “Gentiles” as a statement that ethnic Gentiles are inferior. In context, Paul is describing a former way of life marked by separation from God, not assigning human worth.
Final verdict
Ephesians 4:17–24 means that Christians are called to live in a way that matches their new identity in Christ. The “old self” is the former life shaped by corrupted desires and darkened thinking. The “new self” is the renewed life God creates, marked by righteousness, holiness, and a changed mind.
So the passage is not mainly about trying harder. It is about living out a real change of identity. Paul’s point is direct: leave the old way behind, let your mind be renewed, and live as the new person God has made.
FAQ
Does “put off the old self” happen once or over time?
Both ideas fit the passage. There is a decisive break with the old life, and there is also an ongoing daily pattern of leaving old ways behind.
Is Paul talking about conversion or sanctification?
He is doing both. The new life begins in Christ, and it continues as believers are shaped into that new life.
What does “renewed in the spirit of your minds” mean?
It means a deep inner reorientation. Paul is talking about a new way of thinking that changes how a person lives.
Why does this passage matter for the church?
Because Paul is not only describing private morality. He is describing a renewed people whose shared life should look different from the old world around them.