Jehu

Facts:

Jehu was the name of two men in the Old Testament.

Jehu son of Hanani was a prophet during the reigns of King Ahab of Israel and King Jehoshaphat of Judah.
Jehu son (or descendant) of Jehoshaphat was a general in the Israelite army who was anointed king by order of the prophet Elisha.
Jehu killed two evil kings: King Joram of Israel and King Ahaziah of Judah.
King Jehu also killed all the relatives of the former King Ahab, and had the evil queen Jezebel killed.
Jehu destroyed all the places of Baal worship in Samaria and killed all the prophets of Baal.
King Jehu served the only true God, Yahweh, and was king over Israel for twenty-eight years.

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