Others such as these met him in the outer mountain and thought to mock him because he had not learned letters. And Antony said to them, 'What do you … - Athanasius of Alexandria

It is, indeed, in accordance with the nature of the invisible God that He should be thus known through His works; and those who doubt the Lord's resurrection because they do not now behold Him with their eyes, might as well deny the very laws of nature. They have ground for disbelief when works are lacking; but when the works cry out and prove the fact so clearly, why do they deliberately deny the risen life so manifestly shown? Even if their mental faculties are defective, surely their eyes can give them irrefragable proof of the power and Godhead of Christ. A blind man cannot see the sun, but he knows that it is above the earth from the warmth which it affords; similarly, let those who are still in the blindness of unbelief recognize the Godhead of Christ and the resurrection which He has brought about through His manifested power in others.

repentance recall men from what is according to their nature; all that it does is to make them cease from sinning. Had it been a case of a trespass only, and not of a subsequent corruption, repentance would have been well enough; but when once transgression had begun men came under the power of the corruption proper to their nature and were bereft of the grace which belonged to them as creatures in the Image of God.

For just as, though invisible, He is known through the works of creation; so, having become man, and being in the body unseen, it may be known from His works that He Who can do these is not man, but the Power and Word of God.