Then Moab rebelled against Israel after the death of Ahab. Also of Judah, from the reign of Jehoram son of Jehoshaphat to Zedekiah, who for contemning the Lord's commandment by his prophets, and neglecting his many admonitions by famine and other means was taken by his enemies, saw his sons most cruelly slain before his face, and his own eyes put out, as the Lord had declared to him before by his prophet Jeremiah. By the just vengeance of God for contempt of his word Jerusalem was destroyed, the temple burnt, and he and all his people were led away captives into Babylon. He shows that idolaters do not have the true God, or else they would seek none but him alone.
Ignorance is the mother of error and idolatry.
Then the king sent unto him a captain of fifty with his fifty. Thou man of God, the king hath said, Come down. And there came down fire from heaven, and consumed him and his fifty. He declares the power God's word has in the mouth of his servants, when they threaten God's judgments against the wicked. Again also he sent unto him another captain of fifty with his fifty.