15 And when he departed from there, he met Jehon'adab the son of Rechab coming to meet him; and he greeted him, and said to him, "Is your heart true to my heart as mine is to yours?" And Jehon'adab answered, "It is." Jehu said, "If it is, give me your hand." So he gave him his hand. And Jehu took him up with him into the chariot.
Matthew Henry's Commentary on 2 Kings 10:15
Commentary on 2 Kings 10:15-28
(Read 2 Kings 10:15-28)
Is thine heart right? This is a question we should often put to ourselves. I make a fair profession, have gained a reputation among men, but, is my heart right? Am I sincere with God? Jehonadab owned Jehu in the work, both of revenge and of reformation. An upright heart approves itself to God, and seeks no more than his acceptance; but if we aim at the applause of men, we are upon a false foundation. Whether Jehu looked any further we cannot judge. The law of God was express, that idolaters were to be put to death. Thus idolatry was abolished for the present out of Israel. May we desire that it be rooted out of our hearts.