Jamieson, Fausset & Brown, on 1Chr 4:31

“And in Bethmarchaboth, and in Hasarsusim, and in Bethberai, and in Saarim. These were their cities unto the reign of David.”

“These were their cities unto the reign of David--In consequence of the sloth or cowardice of the Simeonites, some of the cities within their allotted territory were only nominally theirs. They were never taken from the Philistines until David's time, when, the Simeonites having forfeited all claim to them, he assigned them to his own tribe of Judah (Sa1 27:6).”

Imported from an open dataset — not yet checked against the printed edition.