3.

 What is the key word in the Nicene Creed and what does it mean?

            The key word is homoousios, which means one in essence or substance, consubstantial. St. Athanasius of Alexandria worked out the full implications of this concept which explains the Son's relation to the Father. Christ is not some kind of superior creature, but He is God in the very sense that the Father is, and He is equal in power to, and in undivided glory with, the Father. Christ is “true God of true God, begotten not made, one in essence with the Father,” the Church's Creed proclaims.