1. Ephesians 4:26-27
""In your anger do not sin": Do not let the sun go down while you are still angry, and do not give the devil a foothold."
Anger itself is not inherently sinful - "even a righteous wrath" can exist when directed at genuine wrongs. The critical guidance is "be angry and sin not" - anger should not be motivated by pure self-interest, avoid "bitterness, spite, malevolence," and be quickly resolved. "Let not the sun go down upon your wrath" means resolve conflicts quickly, "do not let anger linger beyond the day," preventing anger from becoming a "lasting mood." Prolonged anger "gives scope" to destructive spiritual forces. The message emphasizes managing anger constructively and preventing it from becoming destructive, prolonged emotional state (BibleHub Commentaries).