2 Kings 10:15-17

15When he left there, he found Jehonadab son of Rechab coming to meet him. He greeted him and then asked, “Is your heart one with mine?” “It is,” Jehonadab replied. Jehu said, “If it is, give me your hand.” So he gave him his hand, and Jehu pulled him up into the chariot with him.

16Then he said, “Come with me and see my zeal for the Lord!” So he let him ride with him in his chariot.

17When Jehu came to Samaria, he struck down all who remained from the house of Ahab in Samaria until he had annihilated his house, according to the word of the Lord spoken to Elijah.