Gregory Thaumaturgus,
Ante-Nicene Fathers Vol. V, Dubious or Spurious Writings…
(1885)
“ And again, if the impious say, How will there not be three Gods and three Persons, on the supposition that they have one and the same divinity?—we shall reply: Just because God is the Cause and Father of the Son; and this Son is the image and offspring of the Father, and not His brother; and the Spirit in like manner is the Spirit of God, as it is written, “God is a Spirit.” ”
