1 Kings 15:1

Now in the eighteenth year of King Jeroboam the son of Nebat , Abijam began to reign over Judah .

In the eighteenth year of the reign of Jeroboam son of Nebat, Abijah became king of Judah,

Now in the eighteenth year of king Jeroboam the son of Nebat reigned Abijam over Judah.