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And now, victorious and mighty Constantine, in this discourse, whose noble argument is the glory of the Almighty King, let me lay before thee some of the mysteries of his sacred truth: not as presuming to instruct thee, who art thyself taught of God; nor to disclose to thee those secret wonders which he himself, not through the agency of man, but through our common Saviour, and the frequent light of his Divine presence has long since revealed and unfolded to thy view: but in the hope of leading the unlearned to the light, and displaying before those who know them not the causes and motives of thy pious deeds.