St. Thomas the Apostle

The feast of St. Thomas in the new Roman rite has been moved to July 3, as if it is impossible to think of the birth of Jesus and his resurrection  all at once. Not only is it possible, it is required. 

 The Apostle Thomas, called Didymus, or the Twin, was a Galilean. After the descent of the Holy Ghost, he went into many provinces to preach Christ's Gospel. He gave knowledge of the rules of Christian faith and life to the Parthians, Medes, Persians, Hyrcanians, and Bactrians. He went last to the East Indies. Here he provoked the anger of one of the idolatrous kings, because the holiness of his life and teaching, and the number of his miracles, drew many after him, and brought them to the love of Christ Jesus. He was therefore condemned, and slain with lances. He crowned the dignity of the Apostleship with the glory of martyrdom, on the Coromandel coast, not far from Madras.

Sermon of St. Gregory, Pope
Sermon 30 on the Gospels
It is written: By His Spirit the Lord hath adorned the heavens. Job xxvi. 13. Now the ornament of the heavens are the godly powers of preachers, and this ornament, what it is, Paul teaches us thus To one is given by the Spirit the word of wisdom, to another the word of knowledge by the same Spirit; to another faith by the same Spirit; to another the gifts of healing by the same Spirit, to another the working of miracles, to another prophecy, to another discerning of spirits, to another diverse kinds of tongues, to another the interpretation of tongues. But all these worketh that one and the self-same Spirit, dividing to every man severally as He will.

So much power then as have preachers, so much ornament have the heavens. Wherefore again it is written By the word of the Lord were the heavens made. Ps. xxxii. 6. For the Word of the Lord is the Son of the Father. But, to the end that all the Holy Trinity may be made manifest as the Maker of the heavens, that is, of the Apostles, it is straightway added touching God the Holy Ghost: you and all the host of them by the Breath of His mouth. Therefore, the might of the same heavens is the might of the Spirit, for they had not braved the powers of this world, unless the strength of the Holy Ghost had comforted them. For we know what manner of men the Teachers of the Holy Church were before the coming of this Spirit and since He came we see in Whose strength they are made strong.

Homily by Pope St. Gregory the Great.
26th on the Gospels
Dearly beloved brethren, what is it in this passage which particularly claimeth our attention? Think ye that it was by accident that this chosen Apostle was not with them when Jesus came? or, when he came, heard? or, when he heard, doubted? or, when he doubted, felt? or when he had felt, believed? All these things were not accidental, but Providential. It was a wonderful provision of Divine mercy, that this incredulous disciple, by thrusting his fingers into the bodily Wounds of his Master, should apply a remedy to the spiritual wounds of unbelief in our souls. The doubts of Thomas have done us more good than the faith of all the disciples that believed. While he feels his way to faith, our minds are freed from doubt, and settled in faith.

Even as the Lord before His birth willed that Mary should be espoused, and yet never lose her virginity, so, after His Resurrection, He willed that His disciple should doubt, and yet not lose his faith. For, even as the espoused husband was the keeper of the virginity of the Mother, so was the disciple who doubted and felt, the witness of the truth of the Resurrection. He felt, and cried out My Lord and my God. Jesus saith unto him Thomas, because thou hast seen Me, thou hast believed. When the Apostle Paul saith Heb. xi. i: Faith is the substance of things hoped for, the evidence of things not seen, he plainly means that faith is the evidence of things that cannot be seen. When they are seen, there remains not faith, but knowledge.

Thomas, then, sees, and believes. Why is it said to him Because thou hast seen Me, thou hast believed? The truth is, he saw one thing, and so believed another. To mortal man it is not given to see God. He therefore saw only the Manhood, and yet had faith in the Godhead: My Lord and my God. This he said, seeing and believing, seeing Perfect Man, and yet believing in Perfect God, Whom he could not see. O what a comfort are the words which follow! Blessed are they that have not seen, and yet have believed. These words are specially meant for us, who have not seen even the Flesh, and who yet do believe. They are specially meant for us if we believe and do not, by our lives, give the lie to our belief. He only hath a saving faith, whose faith bears fruit.