Jehoiada

Facts:

Jehoiada was a priest who helped hide and protect King Ahaziah's son Joash until he was old enough to be declared king.

Jehoiada arranged for hundreds of bodyguards to protect young Joash as he was proclaimed king by the people in the temple.
Jehoiada led the people in getting rid of all the altars of the false god Baal.
For the rest of his life, Jehoiada the priest advised King Joash to help him obey God and rule the people wisely.
Another man named Jehoiada was the father of Benaiah.