Then Ahimelech answered the king, and said, Who among all your servants is so faithful as David, who is the king's son-in-law, and is taken into your council, and is honorable in your house?
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. "