And one cried unto another, and said, Holy, holy, holy, is the LORD of hosts: the whole earth is full of his glory.
All Commentaries on Isaiah 6:3 Go To Isaiah 6
Ambrose of Milan
AD 397
Cherubim and seraphim with unwearied voices praise him and say, “Holy, holy, holy is the Lord God of hosts.” They say it not once, lest you should believe that there is but one; not twice, lest you should exclude the Spirit; they say not holies [in the plural], lest you should imagine that there is plurality, but they repeat three times and say the same word, that even in a hymn you may understand the distinction of persons in the Trinity and the oneness of the Godhead, and while they say this they proclaim God.
