'Reign Over Judah' in the Bible

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

In the twentieth year of Jeroboam king of Israel began Asa to reign over Judah.

Jehoshaphat the son of Asa began to reign over Judah in the fourth year of Ahab king of Israel.

In the eleventh year of Joram the son of Ahab began Ahaziah to reign over Judah.

In the eighteenth year of king Jeroboam began Abijah to reign over Judah.