The NIV translation if 1 Corinthians 5:4-5 reads, “When you are assembled in the name of our Lord Jesus and I am with you in spirit, and the power of our Lord Jesus is present, hand this man over to Satan, so that the sinful nature may be destroyed and his spirit saved on the day of the Lord.” The implication of this verse is that there may come a time in this life when our sinful nature no longer exists. Is that what the Bible teaches?
The Greek word the NIV translates “sinful nature” is the word most literally translated “flesh.” The NIV avoids the word “flesh” because it creates an image of tissue and bone–our physical body. To view the verse in this sense is to inject a dualism between body and spirit that is not part of Paul’s argument. The word “flesh” in Paul’s writings most often refers to that self-sufficient part of our nature that is God-defying. It’s our tendency to give in to that which is selfish, self-centered, and independent of God.
The purpose of the church discipline in 1 Corinthians 5 was to excommunicate the man who rebelled against God’s clear morality (See Leviticus 18:8, Deuteronomy 22:30, Deuteronomy 27:20) with the hope that he would face his tendency to give in to this rebellious, “fleshly” part of his nature, and determine to follow God instead. It is that tendency that would be crippled or ruined.
Unfortunately, the sinful nature itself is something that remains throughout our earthly lives. Paul concedes this in Romans 7:18. We can battle it with an increasing measure of success by God’s grace. But we cannot eradicate it in this life.