2 Kings 10:15-16

15When Jehu left Beth Eked, he met Rekab's son Jehonadab. He was coming to meet Jehu. Jehu said, ‘Hello! Do you trust me, as I trust you?’ Jehonadab answered, ‘Yes, I do!’ Jehu replied, ‘Then hold your hand out to me.’ So he did that and Jehu pulled him up into his chariot.

16Jehu said, ‘Come with me. You will see that I want to serve the Lord faithfully.’ So Jehonadab rode with Jehu in his chariot.