many who find that “nothing happens” when they sit down, or kneel down, to a book of devotion, would find that the heart sings unbidden while they ar… - Athanasius of Alexandria

The answer is this. The Lord did not come to make a display. He came to heal and to teach suffering men. For one who wanted to make a display the thing would have been just to appear and dazzle the beholders. But for Him Who came to heal and to teach the way was not merely to dwell here, but to put Himself at the disposal of those who needed Him, and to be manifested according as they could bear it, not vitiating the value of the Divine appearing by exceeding their capacity to receive it.

And thus, taking from ours that which is like, since all were liable to the corruption of death, delivering it over to death on behalf of all, he offered it to the Father, doing this in his love for human beings, so that, on the one hand, with all dying in him the law concerning corruption in human beings might be undone,and, on the other hand, that as human beings had turned towards corruption he might turn them again to incorruptibility and give them life from death, by making the body his own and by grace of the resurrection banishing death from them as straw from the fire.

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.