Gospel according to ...
The chief teaching of [so-and-so]. “The Gospel according to Mammon” is the making and collecting of money. “The Gospel according to Sir Pertinax Mac Sycophant,” is bowing and cringing to those who are in a position to lend you a helping hand.
Gospel of Nicodemus (The). Sometimes called “The Acts of Pilate” (Acta Pilati), was the main source of the “Mysteries” and “Miracle Plays” of the Middle Ages; and although now deemed apocryphal seems for many ages to have been accepted as genuine.
Source: Dictionary of Phrase and Fable, E. Cobham Brewer, 1894