1 Samuel 20:21-22

21When I send a boy after them, I will say, “Go and find the arrows.” If I say to the boy, ‘Look, the arrows are on this side of you; get them,’ then come back. For as surely as the Lord lives, you will be safe and there will no problem.

22But if I say to the boy, “Look, the arrows are on the other side of you,’ get away. For in that case the Lord has sent you away.