2 Kings 10:12

9 And it came to pass in the morning, that he went out, and stood, and said to all the people, Ye [be] righteous: behold, I conspired against my master, and slew him: but who slew all these?

10 Know now that there shall fall unto the earth nothing of the word of the LORD, which the LORD spake concerning the house of Ahab: for the LORD hath done [that] which he spake by his servant Elijah.

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

12 And he arose and departed, and came to Samaria. [And] as he [was] at the shearing house in the way,

13 Jehu 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.

14 And 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.

15 And 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 thine heart right, as my heart [is] with thy heart? And Jehonadab answered, It is. If it be, give [me] thine hand. And he gave [him] his hand; and he took him up to him into the chariot.