The main argument for putting it earlier is derived from the admitted affinities between it and Romans, the Colossian and Ephesian epistles containing, it is held, a more advanced christology (so Lightfoot especially, and Hort, Judaistic Christianity, pp. 115-129).
From the study of these contemporary and genuine documents, he elaborated the theory that the earliest Christianity, the Christianity of Jesus and the original apostles, was wholly Judaistic in tone and practice.
The Apocalypse was a genuine work of John the son of Zebedee, one of the leaders of the Judaistic party, but most of the books were late, at least in their present form.
All four Gospels also were to be placed in the 2nd century, though that according to Matthew retained many features unaltered from the Judaistic original upon which it was based.
The quarrel between St Paul and his opponents did not last so long as Baur supposed, and the great catastrophe of the fall of Jerusalem effectually reduced thorough-going Judaistic Christianity into insignificance from A.D.