Cross reference
Joshua 12:15
15 The king of Libnah, one; the king of Adullam, one;
Joshua 10:29-30
29 Then Joshua and all Israel with him went on from Makkedah and came to Libnah, and made an attack on it;
30 And again the Lord gave it and its king into the hands of Israel; and he put it and every person in it to the sword, till their destruction was complete; and he did to its king as he had done to the king of Jericho.
1 Samuel 22:1
1 So David went away from there and took cover in a strong place at Adullam; and his brothers and all his father's people, hearing of it, went down to him there.