1 Samuel 20:16-18

Young's Literal Translation

¹⁶ And Jonathan covenanteth with the house of David, and Jehovah hath sought [it] from the hand of the enemies of David;

¹⁷ and Jonathan addeth to cause David to swear, because he loveth him, for with the love of his own soul he hath loved him.

¹⁸ And Jonathan saith to him, `To-morrow [is] new moon, and thou hast been looked after, for thy seat is looked after;