Remained in the sides - Rather, “were in the sides of the cave dwelling or abiding there.” Some of these caverns are very deep and spacious. Any one near the mouth of the cave would be visible, but those in the recesses would be quite in the dark and invisible, especially if the incident occurred at night. Psalms 67:1-7, according to the title, was composed on this occasion.
Related Commentaries of 1 Samuel 24:3
1 Samuel 24:3
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.