Ephesians 4:26 - Matthew Poole's English Annotations on the Holy Bible

Be ye angry and sin not: by way of concession, rather than by way of command: q.d. If the case be such that ye must be angry, yet see it be without sin. Let not the sun go down upon your wrath; if your anger is excessive, (for so this word signifies, being different from the former), yet let it not be lasting; be reconciled ere the sun go down.