2 Kings 10:19
Now therefore call unto me all the prophets of Baal, all his servants, and all his priests; let none be wanting: for I have a great sacrifice to do to Baal; whosoever shall be wanting, he shall not live. But Jehu did it in subtilty, to the intent that he might destroy the worshippers of Baal.
After being proclaimed king by the army, Jehu summoned all the prophets, servants, and priests of Baal dwelling at the center of Baal worship near Samaria. The summons was a deceptive stratagem, announcing a great sacrifice to Baal and threatening death to anyone who failed to attend, so that Baal's prophets, worshippers, and priests would gather together in one place to be destroyed.
Jehu had been raised up to execute judgment on wicked Jezebel and all the house of Ahab and on those who had deliberately chosen to continue in sin and to lead others into sin. The gathered worshippers were put to the sword, the idolatrous images were broken down and burned, the temple of Baal was laid in ruins, its priests were set aside and the heathen altars of Baal and of Ashtoreth were thrown down, so Baal was destroyed out of Israel.
God did this from love for erring Israel and compassion for those whose moral power was weak, in merciful providence removing temptation so that some would forsake heathenism and turn their faces heavenward to seek Him. His judgments were tempered with mercy, and when His purpose was accomplished He turned the tide in favor of those who had learned to inquire after Him. Jehu's zeal against Baal's worshippers was joined with self-exaltation and harshness, warning that religious work must not become a torrent of harsh and unbefitting words but must be carried out with gentleness and sympathy.