1Sam 18:1-4

Jonathan's Covenant with David 1When David had finished speaking to Saul, the soul of Jonathan was bound to the soul of David, and Jonathan loved him as his own soul.2Saul took him that day and would not let him return to his father's house.3Then Jonathan made a covenant with David, because he loved him as his own soul.4Jonathan stripped himself of the robe that he was wearing, and gave it to David, and his armor, and even his sword and his bow and his belt.