These men falsify the oracles of God, and prove themselves evil interpreters of the good word of revelation. They also overthrow the faith of many, by drawing them away, under a pretence of [superior] knowledge, from Him who founded and adorned the universe; as if, forsooth, they had something more excellent and sublime to reveal, than that God who created the heaven and the earth, and all things that are therein.
Quote by Irenaeus, referring to self-professing Christians in 1st century. Gnostic heretics share a lot in common with progressive "Christians."
