Lactantius,
Ante-Nicene Fathers Vol. VI, A Treatise on the Anger of God Addressed to Donatus…
(1885)
“ We have sufficiently taught, as I think, in our Institutions, that there cannot be many gods; because, if the divine energy and power be distributed among several, it must necessarily be diminished. But that which is lessened is plainly mortal; but if He is not mortal, He can neither be lessened nor divided. Therefore there is but one God, in whom complete energy and power can neither be lessened nor increased. But if there are many, while they separately have something of power and authority, the sum itself decreases ”
