1 Samuel 20:41-42

When the servant had left, David got up from beside the mound, knelt with his face to the ground, and bowed three times. Then they kissed each other and they both wept, especially David. Jonathan said to David, “Go in peace, for the two of us have sworn together in the name of the LORD saying, ‘The LORD will be between me and you and between my descendants and your descendants forever.’”