2 Chronicles 13:4

Abijah stood up it was natural that Abijah should attempt a conference before beginning civil war, both because his was the weaker side numerically and because he had a telling appeal to make to the revolted tribes (2 Chronicles 13:8; 2 Chronicles 13:12). It was equally natural that Jeroboam should break off the conference after using it to cover his stratagem (2 Chronicles 13:13).

Zemaraim A Zemaraim is mentioned in Joshua 18:22 as one of the cities of Benjamin, whereas here Mount Zemaraim is assigned to Ephraim. The natural inference is that the battle took place on the border of the two kingdoms.