Zanoah and Adullam appear in close connection with Jarmuth in Joshua 15:34, Joshua 15:35. Zanoah was not a place of any importance, but Adullam, near which was David's cave, is often mentioned. It had its own king in the time of Joshua (Joshua 12:15), was fortified by Rehoboam (2 Chronicles 11:7), and remained a city of some strength under the Maccabees (2 Macc.
12:38). Lachish is a place even more celebrated than Adullam. Its king, Japhia, warred with Joshua (Joshua 12:3-16). It was fortified by Rehoboam (2 Chronicles 11:9). Amaziah took refuge there when conspiracy threatened him at Jerusalem (2 Kings 14:19); and Sennacherib "besieged it with all his power" (2 Chronicles 22:9).
Azekah is joined with Jarmuth and Adullam in Joshua 15:35. Like Adullam and Lachish, it was fortified by Rehoboam (2 Chronicles 11:9). They (i.e. the children of Judah) dwelt from Beer-sheba to the valley of Hinnom.
The southernmost and the northernmost parts of Judaea are here mentioned.