1 Samuel 23:22-23

22Go, I pray you, make yet more sure, and know and see his place where his track is, who has seen him there; for it is told me that he deals very subtilly.

23And see, and ascertain all the lurking-places where he hides himself, and come ye again to me with sure information, that I may go with you; and it shall come to pass, if he be in the land, that I will search him out throughout the thousands of Judah.