It appears from this verse that the “prophets” and “priests” of Baal were not identical. The former would correspond to the dervishes, the latter to the mullahs, of Muslim countries. By the “servants” of Baal are meant the ordinary worshippers.
Related Commentaries of 2 Kings 10:19
2 Kings 10:19
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.