Paul had received the same revelation from God that the original disciples had been given. They all preached from the same Source: Jesus Christ.
The cosmology of ancient Greece, saturated with astrology and Gnostic dualism, filtered into the doctrines of the early church, creating corrupt doctrines.
We can glimpse Gnosticism in Paul's epistles to the Galatians and Colossians, in which he combats Gnosticism's twisting of the truth of Jesus Christ.
Faith is difficult enough to maintain on its own, but greatly confused when the pastor dilutes correct doctrine with 'benign' false doctrine from the world.
Changing doctrine in not a sign of growth, but of apostasy. How could we "abide in the doctrine" (II John 9-11) if God changed it from time to time?
When Satan confronted Adam and Eve, he fed them three heresies that Gnosticism incorporated into its parasitic philosophy and way of life.
Reflecting on Michael Crichton's observations about the difficulty of distinguishing truth from error, Richard Ritenbaugh concurs that it is almost impossible to make sense out of this world if we try to process the voluminous information available in these days of exploding knowledge. What goes into our minds (good or bad) …
The book of Jude, a scathing indictment against false teachers, may be the most neglected book in the New Testament. False teachers twist grace into license.