1 Samuel 20:12-17

MLV(i) 12 And Jonathan said to David, Jehovah, the God of Israel, when I have searched out my father about this time tomorrow, or the third day, behold, if there is good toward David, shall I not then send to you and disclose it to you? 13 Jehovah do so to Jonathan and more also, should it please my father to do you evil, if I not disclose it to you and send you away that you may go in peace. And Jehovah be with you as he has been with my father.
14 And you will not only show me the loving kindness of Jehovah, while I yet live, that I not die, 15 but also you will not cut off your kindness from my house until everlasting. No, not when Jehovah has cut off the enemies of David every one from the face of the earth.
16 So Jonathan made a covenant with the house of David, saying, And Jehovah will require it at the hand of David's enemies. 17 And Jonathan caused David to swear again, for the love that he had to him. For he loved him as he loved his own soul.