1 Samuel 23:19-20
19-20Some Ziphites went to Saul at Gibeah and said, "Did you know that David is hiding out near us in the caves and canyons of Horesh? Right now he's at Hakilah Hill just south of Jeshimon. So whenever you're ready to come down, we'd count it an honor to hand him over to the king."
21-23Saul said, "God bless you for thinking about me! Now go back and check everything out. Learn his routines. Observe his movements—where he goes, who he's with. He's very shrewd, you know. Scout out all his hiding places. Then meet me at Nacon and I'll go with you. If he is anywhere to be found in all the thousands of Judah, I'll track him down!"