So David took the spear and the jar of water from Saul's head; and they got them away: and no man saw it, nor knew it, neither did any awake; for they were all asleep, because a deep sleep from Yahweh was fallen on them.
Saul underneath knew that someday David was gonna take the throne. He was trying to protect the throne and to pass it onto his own children. But yet in his heart, he knew that God had anointed David, and that David was God's anointed king. "Then Saul said to David, Blessed be thou, my son David: thou shalt both do great things, and still prevail."