So Jonathan made a covenant with the house of David, [saying], Yahweh will require it at the hand of David's enemies.
And David sware moreover, and said, Your father certainly knows that you and I are good friends; and so he said, Don't let Jonathan know this, lest he is grieved: but truly as the Lord liveth, and as thy soul liveth, there is but a step between me and death ( 1 Samuel 20:3 ).