The king said to the guard who stood about him, Turn, and kill the priests of Yahweh; because their hand also is with David, and because they knew that he fled, and didn't disclose it to me. But the servants of the king wouldn't put forth their hand to fall on the priests of Yahweh.
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. "