The Lord was with Jehoshaphat because he followed the example of his father (ancestor) David. He did not seek [to follow] the Baals [the false gods],

Then all the people went to the house of Baal and tore it down, and they smashed its altars and its images to pieces, and killed Mattan, the priest of Baal, in front of the altars.

For the sons of Athaliah, that wicked woman, had broken into the house of God and also had used all the holy and dedicated things of the house of the Lord for the Baals.

God helped him against the Philistines, and against the Arabs who lived in Gur-baal, and the Meunites.

Instead he walked in the ways of the kings of Israel, and even made cast images for the Baals.

For he rebuilt the [idolatrous] high places which his father Hezekiah had torn down; and he set up altars for the Baals and made the Asherim, and worshiped all the host of heaven [the sun, the moon, stars and planets] and served them.

They tore down the altars of the Baals in his presence; he cut to pieces the incense altars that were high above them; he also smashed the Asherim and the carved images and the cast images to pieces, and ground them to dust and scattered it on the graves of those who had sacrificed to them.