Wisdom of Solomon 13:1

1 For all people who were ignorant of God were foolish by nature; and they were unable from the good things that are seen to know the one who exists, nor did they recognize the artisan while paying heed to his works; 2 but they supposed that either fire or wind or swift air, or the circle of the stars, or turbulent water, or the luminaries of heaven were the gods that rule the world. 3 If through delight in the beauty of these things people assumed them to be gods, let them know how much better than these is their Lord, for the author of beauty created them.

Date: 100-50 B.C.E.
* Dates are based on scholarly estimates

Augustine Confessions 8.1

But I, being weak, made choice of the more agreeable place, and because of this alone was tossed up and down in all beside, faint and languishing with withering cares, because in other matters I was compelled, though unwilling, to agree to a married life, to which I was given up and enthralled. I had heard from the mouth of truth that there be eunuchs, which have made themselves eunuchs for the kingdom of heaven's sake; but, says He, he that is able to receive it, let him receive it. Vain, assuredly, are all men in whom the knowledge of God is not, and who could not, out of the good things which are seen, find out Him who is good. But I was no longer in that vanity; I had surmounted it, and by the united testimony of Your whole creation had found You, our Creator, and Your Word, God with You, and together with You and the Holy Ghost one God, by whom You created all things.

Date: 397-400 C.E.
* Dates are based on scholarly estimates