“Whose all-ruling providence makes known the Father to all. Or, if this was beyond them, they could converse with holy men, and through them learn to know God, the Artificer of all things, the Father of Christ, and to recognize the worship of idols as the negation of the truth and full of all impiety. Or else, in the third place, they could cease from lukewarmness and lead a good life merely by knowing the law. For the law was not given only for the Jews, nor was it solely for their sake that God sent the prophets, though it was to the Jews that they were sent and by the Jews that they were persecuted. The law and the prophets were a sacred school of the knowledge of God and the conduct of the spiritual life for the whole world.”
Athanasius. On The Incarnation of the Word. 184-189. Kindle Edition.