2 Kings 10:15

15 When he left that place, he met Jehonadab, son of Rechab, who was coming to meet him. Jehu greeted him and asked, "Are you as loyal to me as I am to you?" "I am," Jehonadab answered. [So Jehu said,] "If you are, give me your hand." When he gave Jehu his hand, Jehu helped him up into the chariot.