1 Samuel 22:1-2
Context22:1 So David left there and escaped to the cave of Adullam. When his brothers and the rest of his father’s family 1 learned about it, they went down there to him. 22:2 All those who were in trouble or owed someone money or were discontented 2 gathered around 3 him, and he became their leader. He had about four hundred men with him.
1 Samuel 24:3
Context24:3 He came to the sheepfolds by the road, where there was a cave. Saul went into it to relieve himself. 4
Now David and his men were sitting in the recesses of the cave.
Hebrews 11:38
Context11:38 (the world was not worthy of them); they wandered in deserts and mountains and caves and openings in the earth.