Abijah fights Jeroboam
Abijah fought Jeroboam at Mount Zemaraim and won. He took Bethel, Jeshanah and Ephron.
Key passages
1 Ki 15:6–7

There was war between Rehoboam and Jeroboam all the days of his life. The remainder of the acts of Abijam and all that he did, are they not written in the scroll of the events of the days of the kings of Judah? There was also war between Abijam and Jeroboam.

2 Ch 13:2–22

He reigned for three years in Jerusalem. And the name of his mother was Micaiah the daughter of Uriel from Gibeah. Now there was war between Abijah and between Jeroboam. And Abijah joined in the battle with an army of four hundred thousand battle-hardened warriors, chosen men, and Jeroboam put …