Therefore each of you must put off falsehood and speak truthfully to your neighbor, for we are all members of one body. “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. Anyone who has been stealing must steal no longer, but must work, doing something useful with their own hands, that they may have something to share with those in need.

Ephesians 4:25-28 (NIV)