1 Samuel 13:5-7

5And the Philistines were assembled together to fight with Israel, thirty thousand chariots, and six thousand horsemen, and people as the sand which is on the sea-shore in multitude; and they came up, and encamped in Michmash, eastward from Beth-Aven.

6And the men of Israel saw that they were in a strait (for the people were distressed); and the people hid themselves in caves, and in thickets, and in cliffs, and in strongholds, and in pits.

7And the Hebrews went over the Jordan into the land of Gad and Gilead. And Saul was yet in Gilgal, and all the people followed him trembling.