'Avenging' in the Bible

Now my lord, as surely as the Lord lives and as you yourself live, it is the Lord who kept you from participating in bloodshed and avenging yourself by your own hand. May your enemies and those who want trouble for my lord be like Nabal.

Your discernment is blessed, and you are blessed. Today you kept me from participating in bloodshed and avenging myself by my own hand.

The Lord is a jealous and avenging God;the Lord takes vengeanceand is fierce in wrath.The Lord takes vengeance against His foes;He is furious with His enemies.