The assembled "New Testament" started in about 300 ce. and was later discussed to settle differing opinions at the Council of Nicaea if memory serves me well about 25 years before Constantine died. The blessing or nod, so to speak, by Constantine put Christianity on a serious footing and the ability to grow exponentially.
Matthew, Mark, Luke and John were the big deal. The bible you find in the hotel room was from 1600. That is right, 1600 years after the birth of Christ.
