Joshua includes Zemaraim among the cities allotted to Benjamin.
Second Chronicles describes King Abijah of Judah standing on Mount Zemaraim in the hill country of Ephraim and addressing Jeroboam and the army of the northern kingdom.
Abijah appealed to the Davidic covenant and contrasted Judah's worship at the Jerusalem Temple with the religious system established by Jeroboam.
The resulting battle ended in a major victory for Judah, after which Abijah captured several towns from Jeroboam, including Bethel.