2 Kings 10:16-31 (ESV)
16 And he said, “Come with me, and see my zeal for the Lord.” So he had him ride in his chariot. 17 And when he came to Samaria, he struck down all who remained to Ahab in Samaria, till he had wiped them out, according to the word of the Lord that he spoke to Elijah.
18 Then Jehu assembled all the people and said to them, “Ahab served Baal a little, but Jehu will serve him much. 19 Now therefore call to me all the prophets of Baal, all his worshipers and all his priests. Let none be missing, for I have a great sacrifice to offer to Baal. Whoever is missing shall not live.” But Jehu did it with cunning in order to destroy the worshipers of Baal. 20 And Jehu ordered, “Sanctify a solemn assembly for Baal.” So they proclaimed it. 21 And Jehu sent throughout all Israel, and all the worshipers of Baal came, so that there was not a man left who did not come. And they entered the house of Baal, and the house of Baal was filled from one end to the other. 22 He said to him who was in charge of the wardrobe, “Bring out the vestments for all the worshipers of Baal.” So he brought out the vestments for them. 23 Then Jehu went into the house of Baal with Jehonadab the son of Rechab, and he said to the worshipers of Baal, “Search, and see that there is no servant of the Lord here among you, but only the worshipers of Baal.” 24 Then they went in to offer sacrifices and burnt offerings.
Now Jehu had stationed eighty men outside and said, “The man who allows any of those whom I give into your hands to escape shall forfeit his life.” 25 So as soon as he had made an end of offering the burnt offering, Jehu said to the guard and to the officers, “Go in and strike them down; let not a man escape.” So when they put them to the sword, the guard and the officers cast them out and went into the inner room of the house of Baal, 26 and they brought out the pillar that was in the house of Baal and burned it. 27 And they demolished the pillar of Baal, and demolished the house of Baal, and made it a latrine to this day.
28 Thus Jehu wiped out Baal from Israel. 29 But Jehu did not turn aside from the sins of Jeroboam the son of Nebat, which he made Israel to sin—that is, the golden calves that were in Bethel and in Dan. 30 And the Lord said to Jehu, “Because you have done well in carrying out what is right in my eyes, and have done to the house of Ahab according to all that was in my heart, your sons of the fourth generation shall sit on the throne of Israel.” 31 But Jehu was not careful to walk in the law of the Lord, the God of Israel, with all his heart. He did not turn from the sins of Jeroboam, which he made Israel to sin.