1 Samuel 20

16 Jonathan and David made an agreement that even David’s descendants would have to keep.*20.16 Jonathan … keep: Or, continuing Jonathan’s statement to David, "You and your descendants must not kill off my descendants." Then Jonathan said, "I pray that the Lord will take revenge on your descendants if they break our promise."*20.16 I pray … promise: Or "I pray that the Lord take revenge on you if you break our promise!"

17 Jonathan thought as much of David as he did of himself, so he asked David to promise once more that he would be a loyal friend.