2 Kings 11:20

Jehoiada made a covenant between the LORD and the king and the people, that they should be the LORD’s people; also between the king and the people.

All the people of the land went to the house of Baal, and broke it down. They broke his altars and his images in pieces thoroughly, and killed Mattan the priest of Baal before the altars. The priest appointed officers over the LORD’s house.

He took the captains over hundreds, and the Carites, and the guard, and all the people of the land; and they brought down the king from the LORD’s house, and came by the way of the gate of the guard to the king’s house. He sat on the throne of the kings.

Jehoash was seven years old when he began to reign.