2 Samuel 18:5-7

The king commanded Joab, Abishai, and Ittai, “Be gentle with young Absalom for my sake.” Everyone heard the king’s orders to the commanders about Absalom. David’s army went out into the field against Absalom’s Israelites, and they fought in the forest of Ephraim. There David’s army defeated the Israelites. Many died that day—twenty thousand men.