Charles Ellicott Commentary Proverbs 20:22

"Say not thou, I will recompense evil: Wait for Jehovah, and he will save thee." — Proverbs 20:22 (ASV)

Wait on the Lord and he shall save thee— Do not look for vengeance on enemies (for they are to be forgiven), but for deliverance from their attacks; forget their malice, remember only God’s love for you, and trust in Him. (Compare to 1 Peter 3:13, Romans 8:28.)