Eusebius of Caesarea

And you did this on account of our turning away from you. For we are now a desert untended by your careful attention. We are now like we were in the beginning. For there was a time when we had neither prophet nor priest not king nor any of your gifts of grace—in like manner we have now come back to the desert. Such were we in Egypt frittering away time before Moses took us out of there. Neither did we have your name to adorn us when we were not called your people, and we did not have a share in your inheritance. And now we have arrived at a similar point. It is right to refer these words to the season after the arrival of our Savior, by whom all those things will in the end be put behind them, through what was dared by our Savior for them.

This power is present to you, that of which we did not hear from all time, nor were we able to say (which would be bearing false witness) that someone else was such a God, in the way that our eyes have now seen the effects in such works. We have neither seen God nor divine deeds except from you—to those waiting to see, you provide vision and understanding, which coming from outside ourselves is set in place.… “For no one can see God,” and “no one can see my face and live.” But it seems that the Christ of God is praised through these things, he who talked with Moses in the desert and was made visible to all people through his glory appearing to all, about which was said, “we have beheld his glory.”

But even if we are clearly something new, and this truly recent name of Christians has only recently been known among all the nations, our life and manner of conduct in accordance with the very teachings of our religion have not been recently fashioned by us, but, as it were, from the first creation of humanity have been established by the natural concepts of the God-favored people of old.… And by deeds more manifest than words is Abraham’s manner of religion shown to be practiced at present among Christians alone.