Cross reference
Joshua 12:15
15 the king of Libnah, one; the king of Adullam, one;
Joshua 10:29-30
29 Joshua passed from Makkedah, and all Israel with him, to Libnah, and fought against Libnah:
30 and Yahweh delivered it also, and the king of it, into the hand of Israel; and he struck it with the edge of the sword, and all the souls who were therein; he left none remaining in it; and he did to the king of it as he had done to the king of Jericho.
1 Samuel 22:1
1 David therefore departed there, and escaped to the cave of Adullam: and when his brothers and all his father's house heard it, they went down there to him.