I Samuel 20:41

41 After the boy had gone, David got up from the south side of the stone and bowed down before Jonathan three times, with his face to the ground. Then they kissed each other and wept together - but David wept the most.

41 And when the boy had gone, David came from his secret place by the hill, and falling to the earth went down on his face three times: and they gave one another a kiss, weeping together, till David's grief was the greater.