1 Samuel 22:1-2

David Goes to Adullam and Mizpah

22:1 So David left there and escaped to the cave of Adullam. When his brothers and the rest of his father’s family learned about it, they went down there to him. 22:2 All those who were in trouble or owed someone money or were discontented gathered around him, and he became their leader. He had about four hundred men with him.

1 Samuel 24:3

24:3 He came to the sheepfolds by the road, where there was a cave. Saul went into it to relieve himself.

Now David and his men were sitting in the recesses of the cave.

Hebrews 11:38

11:38 (the world was not worthy of them); they wandered in deserts and mountains and caves and openings in the earth.