1 Samuel 20:17

13 But if my father intends to bring evil on you, then may the LORD punish me, and ever so severely, if I do not tell you and send you on your way in safety. May the LORD be with you, just as He has been with my father.

14 And as long as I live, treat me with the LORD’s loving devotion, that I may not die,

15 and do not ever cut off your loving devotion from my household—not even when the LORD cuts off every one of David’s enemies from the face of the earth.”

16 So Jonathan made a covenant with the house of David, saying, “May the LORD hold David’s enemies accountable.”

17 And Jonathan had David reaffirm his vow out of love for him, for Jonathan loved David as he loved himself.

18 Then Jonathan said to David, “Tomorrow is the New Moon, and you will be missed if your seat is empty.

19 When you have stayed three days, hurry down to the place you hid on the day this trouble began, and remain beside the stone Ezel.

20 I will shoot three arrows to the side of it, as if I were aiming at a target.

21 Then I will send a boy and say, ‘Go, find the arrows!’ Now, if I expressly say to him, ‘Look, the arrows are on this side of you; bring them,’ then come, because as surely as the LORD lives, it is safe for you and there is no danger.

Read all of 1 Samuel 20