Let not the sun go down on your wrath
What's the meaning of the phrase 'Let not the sun go down on your wrath'?
Do not hold on to your anger for more than one day.
What's the origin of the phrase 'Let not the sun go down on your wrath'?
This expression derives from the Bible, Ephesians 4:26. The earliest version printed in English is in Coverdale's Bible, 1535:
Be angrie, but synne not. Let not ye Sonne go downe vpo youre wrath.
See also: the List of Proverbs.