If anyone turns away from God’s true message, you believers should urge him to once again obey God so that God will forgive his many sins.

James 5:19-20

19 My fellow believers, if anyone of you stops obeying the true message from God, someone from among you should persuade that person to once again do what God has told us to do. If he stops doing what is wrong, 20 the one who persuaded him should realize that because he has enabled the person who was sinning to stop doing what is wrong, God will save that person from ◄spiritual death/being separated from him forever►, and will forgive his many sins.