What should I do when I sin? Confess it to God, and trust … Twetch · March 7, 2021 What should I do when I sin?Confess it to God, and trust the blood of Jesus Christ to cleanse you. Repent (turn away from the sin), and ask God for the power to help you stop committing that sin.re: (I John 1:6-10, Proverbs 28:13)