Ephesians 4

26 ‘Be angry but do not sin’;*This is an exact quotation from Psalm 4:4, though not presented as such. do not let the sun set on your angry mood, 27 nor give an opportunity to the devil.*Evil and injustice should make us angry, and legitimate anger should give rise to appropriate action. But if we do nothing except to sit and brood, we do not help the situation and we do give Satan opportunity.