The Book of Jude Part 4 - Dirty Dreamers and Slick Schemers
Jude describes apostates as "dreamers." That is, apostates are dreamers who conjure up their own theology. They just dream up what they believe. Their theology is a figment of their imagination. They base what they believe on subjective opinion rather than objective revelation. In other words, they base what they believe on what they think, rather than what God says.