Why do Christians still sin after being saved?
Question 6049
This question troubles new Christians and experienced ones alike. If Christ has truly dealt with sin, if we are new creations, if the Spirit now lives within us, why does the pull toward sin remain so real and so persistent? Some teachers have suggested that genuine conversion should produce a point of complete victory over sin in this life, known in various traditions as entire sanctification or Christian perfection. Scripture tells a different story, and it is important to understand why the ongoing struggle is not a sign that something has gone wrong.
Scripture Is Honest About the Ongoing Battle
Romans 7 describes the conflict with a directness that should be deeply reassuring to struggling believers. “For I do not do what I want, but I do the very thing I hate” (Romans 7:15). Whether Paul is describing his pre-conversion or post-conversion experience has been debated, but the intensity of the battle described, the genuine desire to obey God combined with the experience of ongoing failure, resonates most naturally with the experience of someone who genuinely wants to obey and knows what it is to fail. Galatians 5:17 states the ongoing reality plainly: “For the desires of the flesh are against the Spirit, and the desires of the Spirit are against the flesh, for these are opposed to each other, to keep you from doing the things you want to do.” The word translated “opposed” is antikeimai, to be set in direct opposition. This is not a mild tendency; it is active conflict.
The New Testament’s consistent assumption that believers require ongoing instruction about mortifying sin, putting away specific sinful patterns, and pursuing holiness makes no sense if conversion were expected to produce immediate and complete victory. Commands like “put to death therefore what is earthly in you” (Colossians 3:5) are addressed to people who are already converted and already in Christ. If conversion had ended the struggle, these commands would be unnecessary.
The Flesh Has Not Been Removed
The decisive shift at conversion is real: the old man is crucified with Christ (Romans 6:6), we are new creations (2 Corinthians 5:17), the Spirit indwells us (Romans 8:9). But the flesh, the principle of self-directed living that operates independently of God, remains active in the believer until the resurrection. This is not a secondary or inferior view of salvation; it is the consistent picture Scripture paints. Paul’s language of putting to death the deeds of the body through the Spirit (Romans 8:13) is the language of ongoing, active engagement with a real enemy, not a ceremony to be performed once.
The flesh works from within, exploiting desires and habits formed before conversion that do not simply evaporate. The world exerts constant pressure through surrounding culture, social relationships, and the shaping of what seems normal and desirable. The devil operates through both direct temptation and the strategic use of the other two. The converted person does not step out of this field of battle; they engage it with new resources and a new identity, but they engage it nonetheless.
The Purpose of the Ongoing Battle
It would be wrong to conclude that the ongoing struggle with sin is simply a regrettable feature of Christian life that God tolerates because he has not yet completed his work. Romans 5:3–4 describes how suffering produces endurance, and endurance produces character, and character produces hope. The trial of faith, including the painful experience of failure, repentance, and renewed dependence on God, produces in believers what ease could not. Hebrews 12:10–11 says that discipline “yields the peaceful fruit of righteousness to those who have been trained by it.” The training requires something to train against.
The ongoing struggle also keeps believers genuinely dependent on God rather than on their own spiritual performance. Paul’s thorn in 2 Corinthians 12 was left unremoved precisely because its removal would have endangered him: “to keep me from becoming conceited” (2 Corinthians 12:7). The experience of genuine weakness and the ongoing need for grace keeps the believer’s trust where it belongs.
The Direction Matters
While the ongoing struggle with sin is normal and expected, there is a difference between the believer who fails, grieves over it, confesses, and returns to God, and the believer who settles into a pattern of persistent, unrepented sin without apparent concern. 1 John 2:1 captures both realities at once: “I am writing these things to you so that you may not sin. But if anyone does sin, we have an advocate with the Father, Jesus Christ the righteous.” The expectation is that believers should not sin; the provision is that when they do, there is a way back. What is inconsistent with genuine conversion is not failure but the absence of any desire to repent, any grief over sin, any movement toward God when sin has occurred.
So, now what?
Romans 8:13 describes the believer’s responsibility in the ongoing battle: “if by the Spirit you put to death the deeds of the body, you will live.” The means of victory is the Spirit, and it is available. 1 John 1:9 keeps the door open for every genuine believer who fails: “If we confess our sins, he is faithful and just to forgive us our sins and to cleanse us from all unrighteousness.” The ongoing struggle with sin is not evidence that conversion did not happen. It is evidence that it did, because the person who has not been converted does not struggle against sin in this way; they simply live in it without conflict. The struggle itself is a mark of the Spirit’s work.
“For the desires of the flesh are against the Spirit, and the desires of the Spirit are against the flesh, for these are opposed to each other, to keep you from doing the things you want to do.” Galatians 5:17
