2 Kings 10:15; 2 Kings 10:23

15 After he left there, he came upon Jehonadab son of Rekab, who was on his way to meet him. Jehu greeted him and said, “Are you in accord with me, as I am with you?” “I am,” Jehonadab answered. “If so,” said Jehu, “give me your hand.” So he did, and Jehu helped him up into the chariot.

23 Then Jehu and Jehonadab son of Rekab went into the temple of Baal. Jehu said to the servants of Baal, “Look around and see that no one who serves the LORD is here with you—only servants of Baal.”