REFLECTIONS FOR A NEW HEART: Putting on the New Self (Ephesians 4:17-24)

The Old Self and the New Self

Main Idea of Ephesians: 

Ephesians reveals God’s eternal plan to unite all things in Christ, detailing our spiritual riches, the Church’s unity as His body, and our calling to live out this new identity.

Questions to Consider:

In verses 17-19, how does Paul describe the lifestyle of unbelievers? What does he say is the root cause of their empty and darkened way of life?

What does the phrase “futility of their minds” mean to you?

Verse 20 creates a sharp contrast with the words, “But that is not the way you learned Christ!” What does it mean to “learn Christ” rather than just learn about Him?

Paul uses the metaphor of changing clothes to describe the Christian life. What are the three distinct commands he gives in verses 22-24?

How is the “old self” described in verse 22? What is its nature and destiny?

How is the “new self” described in verse 24? Who was it created to be like?

The Text: 

“Therefore, I say this and testify in the Lord: You should no longer walk as the Gentiles do, in the futility of their thoughts. They are darkened in their understanding, excluded from the life of God, because of the ignorance that is in them and because of the hardness of their hearts. They became callous and gave themselves over to promiscuity for the practice of every kind of impurity with a desire for more and more.

But that is not how you came to know Christ, assuming you heard about him and were taught by him, as the truth is in Jesus, to take off your former way of life, the old self that is corrupted by deceitful desires, to be renewed in the spirit of your minds, and to put on the new self, the one created according to God’s likeness in righteousness and purity of the truth.”

– Ephesians 4:17-24 (CSB)

Observations:

A Solemn Command (v. 17a): Paul begins with a serious charge (“I say and testify in the Lord”) for believers to live in a radically different way.

The Old Life Described (vv. 17b-19): He details the former way of life, tracing it from a futile mind to a hard heart, culminating in a lifestyle of sensuality and impurity.

The Great Contrast (vv. 20-21): A sharp turn is made, contrasting the old life with the new reality of having “learned Christ,” in whom all truth is found.

The Threefold Process (vv. 22-24): Paul lays out three commands for Christian living: “put off” the old self, “be renewed” in the mind, and “put on” the new self.

Interpretation:

The Old Way of Walking (vv. 17-19): Paul issues a solemn command that believers must no longer live like the pagan world around them. He diagnoses their condition, tracing it to its root: the “futility of their minds.” Because their thinking is unmoored from God, it is empty and pointless. This intellectual darkness leads to spiritual consequences: a “darkened understanding,” “alienation from the life of God,” and a “hardness of heart.” The inevitable moral result is a callous conscience that gives itself over to sensuality and impurity. This is Paul’s stark picture of life apart from Christ.

Learning Christ (vv. 20-21): With the powerful words, “But that is not the way you learned Christ!” Paul makes a sharp pivot. For him, conversion is not merely learning facts about Jesus; it is to “learn Christ” Himself. Christ is both the teacher and the curriculum. This new life is based on the reality that “the truth is in Jesus.” To truly know Him means you can no longer live in the old way.

The New Wardrobe: Put Off and Put On (vv. 22-24): Paul uses the powerful metaphor of changing clothes to describe Christian sanctification. This transformation involves three essential commands:

“Put off your old self” (v. 22): This is a decisive, once-for-all action. The “old self” is our unregenerate nature, the person we were in Adam, whose life is defined by sin. It is corrupt and continually being destroyed by its “deceitful desires.” At conversion, we decisively renounce and throw off this old identity.

“Be renewed in the spirit of your minds” (v. 23): This is the ongoing, continuous process at the very heart of our change. True sanctification is not just behavior modification; it is the transformation of our worldview, values, and thoughts. This renewal is a work of the Holy Spirit as we saturate our minds with the truth of God’s Word.

“Put on the new self” (v. 24): This is another decisive action. We are to actively “clothe” ourselves with our new identity. This “new self” is a divine reality, “created after the likeness of God in true righteousness and holiness.” It is who we now are in Christ, and we are called to live out that truth every day.

Application:

Make a Clean Break: Recognize that your “old self” has been crucified with Christ. Actively identify and “put off” thoughts, habits, and desires that belong to your former way of life.

Renew Your Mind Daily: True change starts in the mind. Make it a daily priority to saturate your mind with Scripture. The way you think determines the way you live.

Live Out Who You Are: Consciously “put on” your new identity. In every situation, ask: “How would the new me—who has been created in the likeness of God—respond in this moment?”

Embrace the Difference: Understand that the Christian walk is meant to look radically different from the world because it flows from a completely different source: the life of Christ in you.

Connection to the Main Idea: 

This passage is the core explanation of what it means for believers to “live out this new identity.” Having been made part of Christ’s body and given immense “spiritual riches,” our calling is to live out this new reality through the practical, daily process of putting off the old self, being renewed in our minds, and putting on the new self.

How Does This Text Point to Christ? 

Christ is the great dividing line between the old and new life. To “learn Christ” (v. 20) is to begin the process of transformation. The “truth is in Jesus” (v. 21) and it is this truth that renews our minds. The “new self” we put on is created in the likeness of God, an image that Christ perfectly displays. He is both the power and the pattern for this new life.

Summary:

 Ephesians 4:17-24 commands believers to no longer live in the empty and darkened way of the world. Instead, having “learned Christ,” they are to engage in a three-fold process: decisively “putting off” the old, corrupt self; being continually “renewed” in their minds; and decisively “putting on” the new self, which was created by God in righteousness and holiness.

Be Intentional:

This week, identify one specific pattern of thought or behavior that belongs to your “old self.” Consciously “put it off” by confessing it and replacing it with a truthful, godly alternative.

Memorize Romans 12:2 (“Do not be conformed to this world, but be transformed by the renewal of your mind…”) and pray it daily, asking the Spirit to transform your thinking.

Ask Yourself:

In what areas of my life am I still “walking like the Gentiles,” with futile or darkened thinking?

Am I actively engaged in renewing my mind through God’s Word, or am I passively letting the world shape my thoughts?

Do I see myself as I truly am in Christ—a “new self, created after the likeness of God”—and does that identity shape my daily choices?

Bibliography:

Carson, D. A. (General Editor). NIV Biblical Theology Study Bible (NIVBTSB). Zondervan.

Merida, Tony. Exalting Jesus in Ephesians (Christ-Centered Exposition Commentary – CCE). B&H Publishing Group.

O’Brien, Peter T. The Letter to the Ephesians (Pillar New Testament Commentary – PNTC). Eerdmans.

Stott, John R. W. The Message of Ephesians (The Bible Speaks Today – BST). InterVarsity Press.

Thielman, Frank. Ephesians (Baker Exegetical Commentary on the New Testament – BECNT). Baker Academic.