15 He went on from there and came upon Jehonadab the Recabite who was on his way to meet him. Greeting him, he said, "Are we together and of one mind in this?" Jehonadab said, "We are - count on me." "Then give me your hand," said Jehu. They shook hands on it and Jehonadab stepped up into the chariot with Jehu. 16 "Come along with me," said Jehu, "and witness my zeal for God." Together they proceeded in the chariot. 17 When they arrived in Samaria, Jehu massacred everyone left in Samaria who was in any way connected with Ahab - a mass execution, just as God had told Elijah.
18 Next, Jehu got all the people together and addressed them: Ahab served Baal small-time; Jehu will serve him big-time. 19 "Get all the prophets of Baal here - everyone who served him, all his priests. Get everyone here; don't leave anyone out. I have a great sacrifice to offer Baal. If you don't show up, you won't live to tell about it." (Jehu was lying, of course. He planned to destroy all the worshipers of Baal.) 20 Jehu ordered, "Make preparation for a holy convocation for Baal." They did and posted the date. 21 Jehu then summoned everyone in Israel. They came in droves - every worshiper of Baal in the country. Nobody stayed home. They came and packed the temple of Baal to capacity. 22 Jehu directed the keeper of the wardrobe, "Get robes for all the servants of Baal." He brought out their robes. 23 Jehu and Jehonadab the Recabite now entered the temple of Baal and said, "Double-check and make sure that there are no worshipers of God in here; only Baal-worshipers are allowed."
Matthew Henry's Commentary on 2 Kings 10:15-23
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.