Question

What early Ecumenical Council taught that Jesus was of the same substance as God the Father as well as being of the same substance as humans?

Answer 1

The council of Chalcedon.

Step-by-step explanation:

The Council of Chalcedon, also known as the Fourth Ecumenical Council was a meeting of Christian leaders in the Roman Empire which established the mature expression of Christian faith known as Chalcedonian Orthodoxy. Held from October 8 to November 1, 451 at Chalcedon, it attempted to resolve the issue of how to express the concept of Christ as being both fully human and fully divine.