Ephesians 4:17–24 contrasts the futile, darkened lifestyle of those without Christ with the transformed life believers are called to live. Paul urges Christians to abandon their former ways, of ignorance and sensuality, and instead embrace their new identity in Christ. This involves “putting off” the corrupt old self and “putting on” the new self, created in God’s likeness, through a renewal of the mind, resulting in a life of true righteousness and holiness.