Revenge — the insistence on repaying hurt for hurt — is forbidden. The believer is commanded not to take personal justice into their own hands. This anticipates Romans 12:19: 'Vengeance is mine, saith the Lord.'
Memory phrase: Do not take revenge.
Talk about it: Why is it wrong to pay someone back when they have hurt you?
Prayer: God, help me not pay back wrong for wrong. You are the fair judge.