“So David and Abishai came to the people by night: and, behold, Saul lay sleeping within the trench, and his spear stuck in the ground at his bolster: but Abner and the people lay round about him.”
King James Version (KJV)
26:7 Came - That is, to Saul's host. It might seem a bold and strange attempt; but it may be considered: That David had a particular assurance that God would preserve him to the kingdom. That he had a special instinct from God, to this work; and possibly God might inform him, that he had cast them into a deep sleep, that he might have this second opportunity of manifesting his innocency towards Saul.