Pope Dionysius

Neither then may we divide into three Godheads the wonderful and divine Monad; nor disparage with the name of "work" the dignity and exceeding majesty of the Lord; but we must believe in God the Father Almighty, and in Christ Jesus His Son, and in the Holy Ghost, and hold that to the God of the universe the Word is united. For "I," says He, "and the Father are one;" and, "I in the Father and the Father in Me." For thus both the Divine Triad, and the holy preaching of the Monarchy, will be preserved.

Neither then may we divide into three Godheads the wonderful and divine Monad; nor disparage with the name of "work" the dignity and exceeding majesty of the Lord; but we must believe in God the Father Almighty, and in Christ Jesus His Son, and in the Holy Ghost, and hold that to the God of the universe the Word is united. For "I," says He, "and the Father are one;" and, "I in the Father and the Father in Me." For thus both the Divine Triad, and the holy preaching of the Monarchy, will be preserved.