1 Samuel (Author Compiled by Isaiah from records of Samuel, David, Nathan, and Gad.)
18:3Then Jonathan and David made a covenant, because he loved him as his own soul.
18:4And Jonathan stripped himself of the robe that was upon him, and gave it to David, and his garments, even to his sword, and to his bow, and to his girdle.
Original from The Bible Foundation - bf.org. They claim public domain status for their original text.