Preoccupied with mystical encounters and emotional ecstasies, [many] seek ongoing revelation from heaven – meaning that, for them, the Bible alone is simply not enough. [With them], biblical revelation must be supplemented with personal “words from God,” supposed impressions from the Holy Spirit, and other subjective religious experiences. That kind of thinking is an outright rejection of the authority and sufficiency of Scripture (2 Tim. 3:16–17). It is a recipe for far-reaching theological disaster.
John MacArthur