Syncretic paganism began creeping into the church soon after the Apostles. It has continued to this day. By the Nivea council, much error was present that was not biblical.
**Nivea council**
No such council.
I do not disagree that error was present by the Nicea Council; indeed, a primary purpose of the council was to squelch the error of Arianism. From what I understand, though, all of the churches attending the council were in agreement that, during the Eucharistic celebration, the bread and wine become the body and blood of Christ.
Do you know of any record that shows there was disagreement on this belief in the early church.