I am the LORD: that is my name: and my glory will I not give to another, neither my praise to graven images.
All Commentaries on Isaiah 42:8 Go To Isaiah 42
Cyril of Alexandria
If he is properly and truly the only God, he may be said by us to be the Creator of all things. As the most wise Paul says, “Although there may be so-called gods in heaven or on earth—as indeed there are many ‘gods’ and many ‘lords’—yet for us there is one God, the Father, from whom are all things and for whom we exist, and one Lord, Jesus Christ, through whom are all things and through whom we exist.” And since he has introduced himself to us as the author of great and marvelous things, he says that his glory, that is, the sum of virtues appropriate to God, is not to be given to lifeless idols or to any other created thing but is to be retained for himself alone. It follows from this that the glory of the Godhead may not fittingly be attributed to any other being that differs from him in essence but only to the ineffable and transcendent nature itself. Although he said that his own glory is to be given to nobody, however, he gave it to the Son. For the Son has been glorified in the same way, indeed, as the Father too who is worshiped in heaven and on earth. How then did God give his glory to him, as to one who was not different from him in virtue of the consubstantiality, even though each was divided off into his own hypostasis? The nature of the supreme deity is one in three distinct hypostases, conceived of and worshiped as such by those who hold orthodox views.