Saul said to his servants who stood about him, Hear now, you Benjamites; will the son of Jesse give everyone of you fields and vineyards, will he make you all captains of thousands and captains of hundreds,
So the one escaped to David from the house of Ahimelech, and David felt really responsible for the death of all of those families. He knew that he made a mistake in letting this Doeg go. He should've killed him. "