In what way did the incorruptible body turn out to have wounds and was tangible to a human hand? All this was an act of condescension. For the body that entered through closed doors, and was therefore subtle and light, was free from all coarseness. But to give assurance of the resurrection, the Lord shows it as such, and for this reason rose having the marks of the cross and wounds. Likewise, that He also ate, He ate not out of bodily necessity, but for the confirmation of the resurrection. Therefore, just as before the crucifixion, walking on the waves (Mark 6:48), He had a body of no different nature, so also now He shows it as tangible and having wounds. Nevertheless, although it is tangible and visible, it is incorruptible. For this is shown for confirmation, and not out of necessity or the law of the body. For everything eaten enters into the stomach and is changed (Matt. 15:17), which in Christ's case, after the resurrection, did not occur; but what was eaten, received only for the confirmation of the resurrection, was consumed by a certain invisible and Divine power.
Notice also how for one person – Thomas – the Lord did not refuse to condescend and show His side, in order to save one unbelieving soul, so we too must not despise anyone, not even the least.
Jn. 20:28. Thomas said to Him in answer: My Lord and my God!
See how he who at first did not believe, from touching the side became an excellent theologian. For he proclaimed two natures and one person in the one Christ. By saying "Lord," he confessed the human nature, for "Lord" is used of men as well, for example: "Sir, if you have carried Him away" (John 20:15). And by saying "my God," he confessed the divine essence, and thus confessed One and the Same as both Lord and God.
Jn. 20:29. Jesus says to him: you believed because you saw Me; blessed are those who have not seen and yet have believed.
The Lord, showing us that faith consists in accepting the invisible, says: "Blessed are those who have not seen and yet have believed." Here He hints at the disciples who touched neither the wound from the nails nor the side, yet believed, and not at them alone, but also at those who would come to believe afterward. He said this not in order to deprive Thomas of blessedness, but to comfort those who had not seen. For many say: "Blessed are the eyes that saw the Lord." He comforts such people, saying that there is greater blessedness in not seeing and yet believing.
Jn. 20:30. Jesus performed many other miracles before His disciples, which are not written in this book.
Of what signs does the evangelist speak here? Surely of those which the Lord performed before His suffering? No, but of those which He performed after His resurrection. For the evangelist adds: "He did in the presence of His disciples." But the miracles before the suffering the Lord performed not before the disciples, but before all. Therefore the evangelist now speaks of those miracles which were performed by the Lord after the resurrection. For, associating with the disciples alone for forty days, He presented proofs of the resurrection. Just as before the suffering He performed miracles in confirmation that He is the Son of God, so after the resurrection He performed miracles before the disciples in confirmation that He is the Son of Man, that is, He bears a body, though incorruptible and most godlike, and no longer subject to the laws of the flesh.
Jn. 20:31. But these things have been written so that you may believe that Jesus is the Christ, the Son of God,
"So, from the many miracles performed after the resurrection, only these have been recorded, and not out of boasting, or to add glory to the Only-Begotten, but, he says, so that you might believe." And what is the benefit, and to whom does it pertain? Not to Christ. For what benefit is our faith to Him? But it serves us ourselves.
Jn. 20:31. And, believing, you may have life in His name.
For, believing that He is risen and alive, we prepare life for ourselves, for He is risen and alive for us. But whoever thinks that He is dead, and has not risen and is not alive, assigns and affirms death and destruction for himself.