1 Samuel Chapter 24, Verse 3
From BibleWiki
3: And he came to the sheepcotes by the way, where was a cave;
and Saul went in to cover his feet: and David and his men
remained in the sides of the cave.
3: Saul, therefore, took three thousand chosen men out of all Israel,
and went out to seek after David and his men, even upon the most craggy
rocks, which are accessible only to wild goats.
3: And he came to the flocks of sheep that were by the way, and there was a cave there; and Saul went in to make preparation, and David and his men were sitting in the inner part of the cave.
1 Samuel Chapter 24, Verse 3/commentary

