1 Samuel (Author Compiled by Isaiah from records of Samuel, David, Nathan, and Gad.)
20:8Therefore thou shalt deal kindly with thy servant; for thou hast brought thy servant into a covenant of the LORD with thee: notwithstanding, if there be in me iniquity, slay me thyself; for why shouldest thou bring me to thy father?
Original from The Bible Foundation - bf.org. They claim public domain status for their original text.