2 Kings 10:11-17

11So Jehu smote all that remained of the house of Ahab in Jezreel, and all his great men, and his familiar friends, and his priests, until he left him none remaining.

12And he arose and departed, and went to Samaria. And as he was at the shearing-house of the shepherds in the way, 13Jehu met with the brethren of Ahaziah king of Judah, and said, Who are ye? And they answered, We are the brethren of Ahaziah: and we go down to salute the children of the king and the children of the queen. 14And he said, Take them alive. And they took them alive, and slew them at the pit of the shearing-house, even two and forty men; neither left he any of them.

15And when he was departed thence, he lighted on Jehonadab the son of Rechab coming to meet him; and he saluted him, and said to him, Is thy heart right, as my heart is with thy heart? And Jehonadab answered, It is. If it be, give me thy hand. And he gave him his hand; and he took him up to him into the chariot. 16And he said, Come with me, and see my zeal for Jehovah. So they made him ride in his chariot. 17And when he came to Samaria, he smote all that remained unto Ahab in Samaria, till he had destroyed him, according to the word of Jehovah, which he spake to Elijah.