There seems to be confusion in the Church over the Trinity, when to celebrate Easter, and the nature of Jesus. I, Emperor Constantine, declare that we shall have a meeting in Nicaea to settle these issues!
Arius
Jesus is not a divine, eternal being. He was created at a certain point by God the Father and is therefore neither coeternal or consubstantial with the Father.
You are a heretic! Jesus Christ is eternal!
We have come to the conclusion that Jesus is, in fact, fully divine.
We have organized our core beliefs in this new prayer, the Nicene Creed!
Easter will now be celebrated on a Sunday in a lunar month chosen according to our own Christian criteria, not in the month of Nisan as defined by Jewish tradition.