1 Samuel (Author Compiled by Isaiah from records of Samuel, David, Nathan, and Gad.)
26:15And David saith unto Abner, `Art not thou a man? and who is like thee in Israel? but why hast thou not watched over thy lord the king? for one of the people had come in to destroy the king, thy lord.
Original from The Bible Foundation - bf.org. They claim public domain status for their original text.