And one cried unto another, and said, Holy, holy, holy, is the LORD of hosts: the whole earth is full of his glory.
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Cyril of Alexandria
AD 444
The mouths of the seraphim are filled with blessings. They offer a doxology in turn, not in my opinion because they are tired but because they show respect to one another, both receiving and giving the doxology. They say “holy” three times and then conclude with “Lord of hosts.” This demonstrates that the Holy Trinity exists in one divine essence. All hold and confess that the Father exists, along with the Son and the Spirit. Nothing divides those who are named nor separates them into different natures. Just the opposite is true. We recognize one Godhead in three persons.
