1 Kings 18:40

“And he who sacrifices to any god, other than to Yahweh alone, shall be devoted to destruction.

“But that prophet or that dreamer of dreams shall be put to death because he has counseled rebellion against Yahweh your God who brought you from the land of Egypt and redeemed you from the house of slavery, to drive you from the way in which Yahweh your God commanded you to walk. So you shall purge the evil from among you.

Now Ahab told Jezebel all that Elijah had done, and how he had killed all the prophets with the sword.

Now it happened that as soon as he had finished offering the burnt offering, Jehu said to the guard and to the royal officers, “Come in, strike them down; let none come out.” And they struck them down with the edge of the sword; and the guard and the royal officers threw them out and went to the inner room of the house of Baal.

And all the people of the land came to the house of Baal and tore it down; his altars and his images they broke in pieces thoroughly, and they killed Mattan the priest of Baal before the altars. And the priest appointed overseers over the house of Yahweh.

And all the people came to the house of Baal and tore it down, and his altars and his images they broke in pieces, and they killed Mattan the priest of Baal before the altars.