Ian Ellis-Jones's thesis examines how early Christianity was influenced by Platonic and Neoplatonic thought, arguing that key concepts like the Logos and the Trinity originated from Greek philosophy rather than Judaism or Gnosticism. The paper highlights the impact of Greco-Roman mystery religions on Christian doctrines and rituals, illustrating how Christianity adapted and integrated these ideas rather than merely copying them. Ultimately, it emphasizes the complex interplay between various religious traditions in shaping the foundations of mainstream Christianity.