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8 dreams. Probably a reference to the false teachers’ claims to divine revelation through visionary experiences, claims they might use to justify the three actions that follow.
defile the flesh. Sexual immorality (v. 4 and note), perhaps even homosexuality (v. 7; Rom. 1:26, 27).
reject authority. Though some take this to be human or angelic authority, a reference to the lordship and authority of Jesus Christ is more likely (v. 4).
blaspheme the glorious ones. See note 2 Pet. 2:10.