Lactantius

“ All these Sibyls of whom I have spoken, except the Cumæan, whom none but the Quindecemviri [2] are allowed to read, bear witness that there is but one God, the ruler, the maker, the parent, not begotten of any, but sprung from Himself, who was from all ages, and will be to all ages; and therefore is alone worthy of being worshipped, alone of being feared, alone of being reverenced, by all living beings;—whose testimonies I have omitted because I was unable to abridge them; but if you wish to see them, you must have recourse to the books themselves. ”