1 Samuel 23:21

Then the Ziphites came up to Saul to Gibeah, saying, "Doesn't David hide himself with us in the strongholds in the wood, in the hill of Hachilah, which is on the south of the desert?

Now therefore, O king, come down, according to all the desire of your soul to come down; and our part shall be to deliver him up into the king's hand.

Please go make yet more sure, and know and see his place where his haunt is, [and] who has seen him there; for it is told me that he deals very subtly.

See therefore, and take knowledge of all the lurking places where he hides himself, and come again to me with certainty, and I will go with you: and it shall happen, if he is in the land, that I will search him out among all the thousands of Judah.