Pope Shenouda III
As we mentioned before, the salvation of the world from sins needed an infinite propitiation and none is Infinite except God alone. Since the Lord Jesus Christ offered the propitiation and completed it to the uttermost and redeemed all the people from every iniquity, saving them eternally from the curse of the Law, therefore, He is Infinite and thence He is God.
The act of redemption is an excellent proof confirming that Christ is God because if He were not so, the redemption would not have been considered valid and would not have been sufficient for the salvation of the whole world from all their sins.