1 Samuel 23:22-23

22Go, I pray you, make yet more sure, and know and see his place where his haunt is, and who hath seen him there: for it is told me that he dealeth very subtilly.

23See therefore, and take knowledge of all the lurking places where he hideth himself, and come ye again to me of a certainty, and I will go with you: and it shall come to pass, if he be in the land, that I will search him out among all the thousands of Judah.