1 Samuel 20:18-22

18Then Jonathan said to David, To morrow is the new moon: and thou shalt be missed, because thy seat will be empty.1 19And when thou hast stayed three days, then thou shalt go down quickly, and come to the place where thou didst hide thyself when the business was in hand, and shalt remain by the stone Ezel.234 20And I will shoot three arrows on the side of it, as though I shot at a mark. 21And, behold, I will send a lad, saying, Go, find the arrows. If I expressly say to the lad, Behold, the arrows are on this side of thee, take them; then come thou: for there is peace to thee, and no hurt; as the LORD liveth.5 22But if I say thus to the young man, Behold, the arrows are beyond thee; go thy way: for the LORD hath sent thee away.