Smith's Bible Dictionary (1863)
(a breach), Mount, a name which occurs in (Isaiah 28:21) only—unless the place which it designates is identical with the Baal-perazim mentioned as the scene of one of David’s victories over the Philistines, which was in the valley of Rephaim, south of Jerusalem, on the road to Bethlehem.
Hastings' Dictionary of the Bible (1898) & Schaff's Bible Dictionary
PER'AZIM (breaches), a mountain upon which divine vengeance would be manifested. Isa 28:21. It is not elsewhere mentioned in Scripture, but has been regarded as identical with Baal-perazim of 2 Sam 5:20 and 1 Chr 14:8-17, where David won his victory over the Philistines. The latter place was in the valley of Rephaim. See Baal-per-azim.
Hitchcock's Bible Names (1869)
divisions