1 Samuel 13:6-7

6When the men of Israel saw that they were in a tight situation (for their troops were hard-pressed), they hid in caves, in thickets, in cellars, and in [dry] cisterns (pits).

7Also some of the Hebrews had crossed the [river] Jordan to the land of Gad and Gilead. As for Saul, he was still in Gilgal, and all the people followed him, trembling [in fear and anticipation].