Charles Ellicott Commentary 1 Chronicles 4:29

"and at Bilhah, and at Ezem, and at Tolad," — 1 Chronicles 4:29 (ASV)

Many of the places assigned to Simeon in this list are reckoned among the towns of the extreme south of Judah in Joshua 15:26 and following. Bilhah, or Balah, is, perhaps, Baalah (Joshua 15:29); Ezem (Authorized Version, Azem) and Eltolad are also mentioned there. Their sites are unknown.