This born-digital, open science book provides the first English translation of Markus Vinzent's forthcoming Greek edition of Marcion's Apostolos. Translated by Mark Bilby and edited by Jack Bull, this work provides two interlinked formats by which readers can closely compare the differences between Marcion's earlier version of the letters of the Apostle Paul with the later, canonized forms of those letters. © 2023 Mark G. Bilby and distributed under a CC-BY-NC-ND 4.0 intl license. All other rights reserved.