'Vengeance' in the Bible

and the men of Israel were worn out that day, for Saul had placed the troops under an oath: “The man who eats food before evening, before I have taken vengeance on my enemies is cursed.” So none of the troops tasted any food.

Saul said, "This is what you are to tell David, "The king desires no bride price except 100 Philistine foreskins to take vengeance on the king's enemies.'" Now Saul thought he would cause David to die at the hand of the Philistines.

“May the Lord judge between you and me, and may the Lord take vengeance on you for me, but my hand will never be against you.