Gath, Mareshah, Ziph,
How the ten tribes deserted the house of David we read in the foregoing chapter. They had formerly sat loose to that family (Sa2 20:1, Sa2 20:2), and now they quite threw it off, not considering how much it would weaken the common interest and take Israel down from that pitch of glory at which it had arrived in the last reign.
Commenting on 2 Chronicles 11:1-12
And Zorah,.... The same with Zoreah, Jos 15:33, and Aijalon; there was a city of the tribe of Dan of this name, in the valley of which the moon stood still in the times of Joshua, Jos 10:12, but whether the same with this, and now belonging to Judah, or another of the same name, is not certain: and Hebron; a city in the mountainous...
2Ch 11:8 Gath, a royal city of the Philistines, which was first made subject to the Israelites by David (1Ch 18:1), and was under Solomon the seat of its own king, who was subject to the Israelite king (1Ki 2:39), has not yet been certainly discovered; see on Jos 13:3.