While they were talking about this, Jesus himself stood among them and said to them, ‘Peace be with you.’ 

They were startled and terrified, and thought that they were seeing a ghost. He said to them, ‘Why are you frightened, and why do doubts arise in your hearts? Look at my hands and my feet; see that it is I myself. Touch me and see; for a ghost does not have flesh and bones as you see that I have.’ And when he had said this, he showed them his hands and his feet. While in their joy they were disbelieving and still wondering, he said to them, ‘Have you anything here to eat?’ They gave him a piece of broiled fish, and he took it and ate in their presence.

Then he said to them, ‘These are my words that I spoke to you while I was still with you—that everything written about me in the law of Moses, the prophets, and the psalms must be fulfilled.’ Then he opened their minds to understand the scriptures, and he said to them, ‘Thus it is written, that the Messiah is to suffer and to rise from the dead on the third day, and that repentance and forgiveness of sins is to be proclaimed in his name to all nations, beginning from Jerusalem. You are witnesses of these things. And see, I am sending upon you what my Father promised; so stay here in the city until you have been clothed with power from on high.’ Luke 24:36-49

John Chrysostom (d. 407) in Aquinas, Catena Aurea (1265)

But as a general does not permit his soldiers who are about to meet a large number, to go out until they are armed, so also the Lord does not permit His disciples to go forth to the conflict before tile descent of the Spirit. And hence He adds, But tarry you in the city of Jerusalem, until you be endued with power from on high.

But why did not the Spirit come while Christ was present, or immediately on His departure? Because it was fitting that they should become desirous of grace, and then at length receive it. For we are then most awakened towards God, when difficulties press upon us. It was necessary in the meantime that our nature should appear in Heaven, and the covenants be completed, and that then the Spirit should come, and pure joys be experienced. Mark also what a necessity He imposed upon them of being at Jerusalem, in that He promised that the Spirit should there be given them. For lest they should again flee away after His resurrection by this expectation, as it were a chain, He kept them all there together. But He says, until you be endued from on high. He did not express the time when, in order that they may be constantly watchful. But why then marvel that He does not reveal to us our last day, when He would not even make known this day which was close at hand.

John Updike, “Seven Stanzas at Easter” (1960)

Make no mistake: if he rose at all
It was as His body;
If the cell’s dissolution did not reverse, the molecule reknit,
The amino acids rekindle,
The Church will fall.

It was not as the flowers,
Each soft spring recurrent;
It was not as His Spirit in the mouths and fuddled eyes of the
Eleven apostles;
It was as His flesh; ours.

The same hinged thumbs and toes
The same valved heart
That—pierced—died, withered, paused, and then regathered
Out of enduring Might
New strength to enclose.

Let us not mock God with metaphor,
Analogy, sidestepping, transcendence,
Making of the event a parable, a sign painted in the faded
Credulity of earlier ages:
Let us walk through the door.

The stone is rolled back, not papier-mache,
Not a stone in a story,
But the vast rock of materiality that in the slow grinding of
Time will eclipse for each of us
The wide light of day.

And if we have an angel at the tomb,
Make it a real angel,
Weighty with Max Planck’s quanta, vivid with hair, opaque in
The dawn light, robed in real linen
Spun on a definite loom.

Let us not seek to make it less monstrous,
For our own convenience, our own sense of beauty,
Lest, awakened in one unthinkable hour, we are embarrassed
By the miracle,
And crushed by remonstrance.

  So it is with the resurrection of the dead. What is sown is perishable, what is raised is imperishable. It is sown in dishonor, it is raised in glory. It is sown in weakness, it is raised in power. It is sown a physical body, it is raised a spiritual body. If there is a physical body, there is also a spiritual body. Thus it is written, ‘The first man, Adam, became a living being’; the last Adam became a life-giving spirit. But it is not the spiritual that is first, but the physical, and then the spiritual. The first man was from the earth, a man of dust; the second man is from heaven. As was the man of dust, so are those who are of the dust; and as is the man of heaven, so are those who are of heaven. Just as we have borne the image of the man of dust, we will also bear the image of the man of heaven. 1 Cor 15:42-49