Yes, and more precise than that, how to say that he is God.My current understanding is that what divided the bishops theologically was not about whether or not Jesus is God. What divided them theologically was implicitly mostly about what it means to say that he is God.
Thus the Nicene party favoured the term homoousios (ὁμοούσιος) meaning "of the same substance" or "consubstantial." Their opponents favoured a more conservative favoured homoiousios (ὁμοιούσιος) meaning "of a similar substance."
That one-letter difference (the iota) was all-important, and the church was nearly split over this one iota of difference.
Well, I'm not so sure about that.There were Christians among the common people, possibly many, who did think that Jesus was not God ...
The Jewish-Christian groups who believed in Jesus but not as God had separated away into distinct parties by then, I think.
Nor was there after, really.Before Nicaea, there was no single church under a single administration with a single orthodoxy.
What marked the council as different was the fact that Constantine offered to cover the costs of every bishop to get there. That was 1,800 bishops. Only a fraction went, somewhere around the 220-270 mark. And mostly Easterners. Only four came from the west, and the Pope thought it was a local matter that the easterners could settle locally.
No-one throught Nicaea was in any way significant, its importance grew over time. Nobody at the time thought this was the 'First Ecumenical Council', nor that this council was any different, really, than previous synods... Nor did anyone think the declarations were necessarily infallible or binding, and a large proportion came away thinking the Christologiocal expressions, lacking any sound scriptural basis, were theologically satisfactory.
Quite.There had never been an empire-wide council to try to reach an agreement that would be imposed on all bishops...
Yep. he exiled Arius ... and then changed his mind.The difference with Arius was that the hostilities escalated so much that it the emperor saw it as a danger to the empire.
There were other things theat got to Constantine, like Easter being celebrated of different dates.
Rome worked on the principle that Rome was Rome everywhere. The church was doing it own thing in various places, surely it was better to bring everything into alignment?