Marcion of Sinope was an important figure in early Christianity. His theology rejected the deity described in the Hebrew Scriptures and in distinction affirmed the Father of Christ as the true God. The Church Fathers denounced Marcion, and he was excommunicated from the proto-orthodox Church. He published his own list of New Testament books, making him a catalyst in speeding up the process of development of the New Testament canon by forcing the early Church to respond to his claims.
Possibly the opening lines of Marcion's Antithesis. Quoted in Marcion and Luke-Acts: A Defining Struggle (2006) by Joseph B. Tyson, p. 31.
