are you saying that there was no council of nice? or that constantine didn't cobble together a bunch of belief systems to make sure he didn't have an unruly public?
There was a Council of Nicaea. However, some people have blown this out of context.
The early Christian church, was fairly consistent in it's doctrinal belief system. In 138 AD, Aristides wrote to the Roman government:
The Son of the most high God, revealed by the Holy Spirit, descended from heaven, born of a Hebrew Virgin. His flesh he received from the Virgin, and he revealed himself in the human nature as the Son of God. In his goodness which brought the glad tidings, he has won the whole world by his life-giving preaching
He selected twelve apostles and taught the whole world by his mediatorial, light-giving truth.
And he was crucified, being pierced with nails by the Jews; and he rose from the dead and ascended to heaven. He sent the apostles into all the world and instructed all by divine miracles full of wisdom. Their preaching bears blossoms and fruits to this day, and calls the whole world to illumination.
This was before Constantine was born, and long before the Council of Nicaea.
Now when I say fairly consistent, I don't mean perfect uniformity. Obviously the letters written to the various churches in the new testament, were written primarily to fix doctrinal differences.
But the fundamentals... where we came from... who is G-d... who is Jesus.... why he died... did he rise from the dead.... all of these basics were settled in the early church, long before Constantine, or the Council of Nicaea.
Pliny the Younger a Roman governor, wrote this letter to the Emperor saying:
I asked them whether they were Christians or not? If they confessed that they were Christians, I asked them again, and a third time, intermixing threatenings with the questions. If they persevered in their confession, I ordered them to be executed; for I did not doubt but, let their confession be of any sort whatsoever, this positiveness and inflexible obstinacy deserved to be punished.
However, they assured me that the main of their fault, or of their mistake was this:-That they were wont, on a stated day, to meet together before it was light, and to sing a hymn to Christ, as to a god, alternately; and to oblige themselves by a sacrament [or oath], not to do anything that was ill: but that they would commit no theft, or pilfering, or adultery; that they would not break their promises, or deny what was deposited with them, when it was required back again; after which it was their custom to depart, and to meet again at a common but innocent meal
This was written in 112 AD. They sang hymns to Christ, as to G-d.
So what was the purpose of the Council of Nicaea, if the early church had this well established?
Well quite simply, when Constantine converted to Christianity, and then converted the armies to Christianity... the entire Roman empire began to "christianize". All these people of Rome, wanting to be in the good graces of the Emperor, and the Armies, were walking around saying "Hey we're Christian too!".
Keep in mind, many of these same people, were the people who 50 years prior, were feeding Christians to lions.
So of course with this sudden mass Chistianization, there were many people running around going well... we're Christian.... but..... we don't really believe in X Y and Z.
The Council of Nicaea, was created by Constantine, for this purpose. All of these pagans, that suddenly Christianized, but rejected established early Church doctrine, were causing problems. The Council of Nicaea was meant to basically set in stone, what the Early Church had been practicing and believing since the death of Christ.
The Council of Nicaea did not suddenly decide that Jesus was G-d.
No, Jesus was established as G-d by the Early church for several hundred years. The Council of Nicaea merely set in stone, what they had already been teaching.
Now going back to the actual Council, even there it was fairly established that Jesus Christ, was G-d.
From the records that were kept, only 3 bishops, of all 220 that attended, even hinted that Jesus was not G-d. That would be Arius, who was priest in Alexandria, Egypt.
Arius claimed that G-d the Father had divinity over G-d the Son (Jesus), and that there was in fact a time before G-d the Son existed, and it was only G-d the Father alone.
The Council decided to vote on whether Arius could remain in the Church. Out of 220 attendants, 2 abstained, and the rest voted him out.
Does that sound like there was a huge discussion on Jesus being G-d? One guy questions it, and only two abstain from voting him out. That's pretty clear cut in favor of Jesus being G-d.
Bottom line is, yes Constantine effectively 'christianized' Rome. And yes there was a Council of Nicaea.
But the fact is, Christianity was firmly established long before either happened.