2 Kings 10:18 - Joseph Benson’s Commentary on the Old and New Testaments

Jehu gathered all the people together By their representatives, their elders, or rulers, as was usual, to whom he imparts his mind, and who, being generally corrupt, and mere time-servers, and such as had no sense of religion, made no opposition to his resolution, but seemed to comply with it. Ahab served Baal a little, but Jehu shall serve him much As if he had said, My quarrel is only with Ahab's family, and not with Baal, which my actions shall show: which words, being manifestly false, and spoken with a design to deceive, cannot be excused from sin; this being an immoveable principle, that we must not do the least evil, that the greatest good may come. Though it was lawful, and even commendable, to slay the worshippers of Baal, God's law having enjoined that idolaters should be put to death, yet it was by no means lawful to use treachery, and to deceive them to their destruction, on the faith of false pretences. These were actions no way suitable or agreeable to the God of truth, and such as ought never to have been practised by any that desired to please him.