This belief was first considered heretical by the council of Nicaea, and broke with the Catholic Church over their non-Trinitarian views.
Let's see how much you know about some rather famous Christian sects.  A. This belief was first considered heretical by the council of Nicaea, and broke with the Catholic Church over their non-Trinitarian views. Its legacy, ironically, is that in the years after the Nicene Creed the conflict around this belief helped firmly define the centrality of the trinity.
Let's see how much you know about some rather famous Christian sects.  
{Arianism}