Steve, Gumbi, Mike, Kelvin and Aaron “Kru Juice”, talk about the councils and how they define the faith,

The councils,

First Council of Nicaea (325) Arianism, Homoousius-Jesus and father are one, developed the Creed, excommunicated the Arians, defined beginning of great lent, determined the time of Easter, discussed how to integrate believers back in from Schism of Meliton, outlined relationship among the diocese,
First Council of Constantinople (381) defense of the Holy Spirit, the defense of Jesus human nature, baptism on Trinity confirmed,
First Council of Ephesus (431)
Council of Chalcedon (451)
Second Council of Constantinople (553)
Third Council of Constantinople (680–681)
Second Council of Nicaea (787)