1 Samuel (Author Compiled by Isaiah from records of Samuel, David, Nathan, and Gad.)
30:15And David said to him, Canst thou bring me down to this troop? And he said, Swear to me by God, that thou wilt neither put me to death nor deliver me up into the hand of my master, and I will bring thee down to this troop.
Original from The Bible Foundation - bf.org. They claim public domain status for their original text.