The view of Athanasius was clear that Jesus was same substance of God. Athanasius states “God became human that we might become divine”(Migliore, 176) this is how we normally taught to believe but it closes the door as a believer to think broader about who Jesus is, its kind of ambiguous to see human coming down from heaven and saying that He is the Son of God, and performs all the miracles but in between he dies, that’s little odd to see as God.
The Nicene Creed “speaks of the Son of God as being “of one substance” with God the Father”(Migliore, 169) it was same concept as Athanasius , since it defended Athanasius’ theology. In the view of Nicene Creed “affirms that the Son of God incarnate in Jesus Christ is begotten, not made, is of one substance (homoousios) with God the Father rather than of like substance (homoiousios)”(Migliore, 175) God is one God, one being, through Him all things are