1 Samuel (Author Compiled by Isaiah from records of Samuel, David, Nathan, and Gad.)
19:4And Jonathan spoke good of David to Saul his father, and said to him, Let not the king sin against his servant, against David, because he has not sinned against thee; for also what he did was very advantageous to thee;
Original from The Bible Foundation - bf.org. They claim public domain status for their original text.