He eliminated the pagan priests whom the kings of Judah had appointed to offer sacrifices on the high places in the cities of Judah and in the area right around Jerusalem. (They offered sacrifices to Baal, the sun god, the moon god, the constellations, and all the stars in the sky.)

And the king appointed the lord on whose hand he leaned to have the charge of the gate: and the people trode upon him in the gate, and he died, as the man of God had said, who spake when the king came down to him.

And he said, At this appointed time, when thy term is come, thou shalt embrace a son. And she said, No, my lord, man of God, do not lie to thy handmaid.