ZEPHATHAH.An unknown locality named only (if the text is correct) in 2Ch_14:10 (9).
Hastings' Dictionary of the Bible
Edited by James Hastings, D.D. Published in 1909
Zeph'athah. (watch-tower). The valley of Zephathah. The spot in which Asa joined battle with Zerah, the Ethiopian. 2Ch_14:10 only.
Smith's Bible Dictionary
By Dr. William Smith.Published in 1863
Zeph?athah, a valley at Mareshah, in the tribe of Judah (2Ch_14:10), where Asa defeated Zerah the Cushite. Mareshah was near Eleutheropolis, and Robinson thinks the valley may have been the broad wady which comes down from Beit Jibrin (Eleutheropolis) towards Tell es-Saifeh; in which last name a trace of Zephathah may perhaps be recognized.
The Popular Cyclopedia of Biblical Literature
by John Kitto.
(Heb. Tsepha'thah, צְפָתָה, watchtower; Sept. κατὰ βοῤᾶν; Josephus, Σαφθά, Ant. 8:12,1; Vulg. Sephata), the name of a valley (גֵּאי) where Asa joined battle with Zerah the Ethiopian (2Ch_14:10). It was at, or rather belonging to, Mareshah (לְמָרֵשָׁה; Josephus, οὐκ ἄπωθεν). This would seem to exclude the possibility of its being, as suggested by Robinson (Bibl. Res.2, 31), at Teles-Safieh, which is not less than eight miles from Marash, the modern representative of Mareshah. There is a deep valley, which runs past the latter place down to, Beit Jibrin, and thence into the plain of Philistia. This, perhaps, may be the valley of Zephathah (Porter, Handbook, p. 258). Some, however, understand the name Zephathah to be only thatof Zepihath (q.v.), with הdirective, and render it the valley towards Zephath.
CYCLOPEDIA OF BIBLICAL, THEOLOGICAL AND ECCLESIASTICAL
press 1895.