What peace, so long as the whoredoms - Though the words whoredom, adultery, and fornication, are frequently used to express idolatry, and false religion, in general; yet here they may be safely taken in their common and most obvious sense, as there is much reason to believe that Jezebel was the patroness and supporter of a very impure system of religion; and to this Jehu might refer, rather than to the calf-worship, to which himself was most favourably disposed.
Joram had asked the usual question, “Is it peace?” - meaning simply, “Is all well?” In Jehu‘s reply, by “whoredoms” we are probably to understand “idolatries,” acts of spiritual unfaithfulness; by “witchcrafts,” dealings with the Baal prophets and oracles. Compare 2 Kings 1:2 note.