In the eighteenth year of King Jeroboam, Abijah became king over Judah.
13:1 In the eighteenth year of King Jeroboam, Abijah became king over Judah.
13:2 He reigned three years in Jerusalem. His mother's name was Michaiah the daughter of Uriel of Gibeah. And there was war between Abijah and Jeroboam.