1 Kings 15:1-7

In the eighteenth year of King Jeroboam the son of Nebat, Abijam became king over Judah. He reigned three years in Jerusalem. His mother was Maacah [grand]daughter of Abishalom (Absalom). He walked in all the sins [of idol worship] that his father [Rehoboam] committed before him; and his heart was not entirely devoted to the LORD his God, like the heart of his father (forefather) David. Nevertheless, for David’s sake the LORD his God gave him a lamp (descendant on the throne) in Jerusalem, setting up his son after him and establishing Jerusalem, because David did what was right in the eyes of the LORD, and had not turned aside from anything that He commanded him all the days of his life, except in the matter of [the betrayal of] Uriah the Hittite. There was war between Rehoboam [Abijam’s father] and Jeroboam all the days of Rehoboam’s life. Now as for the rest of the acts of Abijam and everything that he did, are they not written in the Book of the Chronicles of the Kings of Judah? And there was war between Abijam and Jeroboam.