2 Kings 10:15

15After 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.