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 company? And he said, Swear unto me by God, that thou wilt neither kill me, nor deliver me into the hands of my master, and I will bring thee down to this company.
Original from The Bible Foundation - bf.org. They claim public domain status for their original text.