Matthew 10:3

After this, when he had said, "Philip, and Bartholomew," he added, "Thomas, and Matthew the Publican."

But Luke not so, but in the opposite order, and he puts him before Thomas.

Next, "James the son of Alphaeus." For there was, as I have already said, the son of Zebedee also. Then after having mentioned "Lebbaeus, whose surname was Thaddaeus," and "Simon" Zelotes, whom he calls also "the Canaanite," he comes to the traitor. And not as a sort of enemy or foe, but as one writing a history, so hath he described him. He saith not, "the unholy, the all unholy one," but hath named him from his city, "Judas Iscariot." Because there was also another Judas, "Lebbaeus, whose surname was Thaddaeus," who, Luke saith, was the brother of James, saying, "Judas the brother of James." Therefore to distinguish him from this man, it saith, "Judas Iscariot, who also betrayed Him." And he is not ashamed to say, "who also betrayed Him." So far were they from ever disguising aught even of those things that seem to be matters of reproach.

And first of all, and leader of the choir, is the "unlearned, the ignorant man."

(Verse 3.) The first is Simon, who is called Peter, and Andrew his brother; James the son of Zebedee, and John his brother; Philip and Bartholomew; Thomas, and Matthew the tax collector; James the son of Alphaeus, and Thaddaeus. The order and merit of each apostle was determined by the one who searches the secrets of the heart. The first is written Simon, with the surname Peter, to distinguish him from the other Simon who is called the Cananaean, from the village of Cana in Galilee, where the Lord turned water into wine (John 2). He also calls James the son of Zebedee, because another James follows, James the son of Alphaeus. And he pairs the apostles together. He joins Peter and Andrew as brothers, not so much in flesh as in spirit. He also joins James and John, who, leaving behind the bread of the body, followed the true Father. He pairs Philip and Bartholomew, and also Thomas and Matthew the tax collector. The other evangelists, in the order of names, first mention Matthew; and afterwards Thomas, they do not mention the name of the tax collector, so as not to appear to criticize the evangelist while recalling the early way of life. But indeed, (as we said above), he places himself after Thomas and calls himself a publican, so that where sin abounded, grace may abound even more (Rom. V, 20).

The other Evangelists in this pair of names put Matthew before Thomas; and do not add, the Publican, that they should not seem to throw scorn upon the Evangelist by bringing to mind his former life. But writing of himself he both puts Thomas first in the pair, and styles himself the Publican; because, where sin hath abounded, there grace shall much more abound. (Rom. 5:20.)

Some copies have Lebbaeus; but whoever prevented the same man from having two, or even three different names?

Philip and Bartholomew. (e Beda.) Philip is interpreted, 'The mouth of a lamp,' or 'of lamps,' because when he had been enlightened by the Lord, he straightway sought to communicate the light to his brother by the means of his mouth. Bartholomew is a Syriac, not a Hebrew, name, and is interpreted 'The son of him that raiseth watera,' that is, of Christ, who raises the hearts of His preachers from earthly to heavenly things, and hangs them there, that the more they penetrate heavenly things, the more they should steep and inebriate the hearts of their hearers with the droppings of holy preaching.
Thomas, and Matthew the Publican.

(e Beda.) Thomas is interpreted 'an abyss,' or 'a twin,' which in Greek is Didymus. Rightly is Didymus interpreted an abyss, for the longer he doubted the more deeply did he believe the effect of the Lord's passion, and the mystery of His Divinity, which forced him to cry, My Lord and my God. (John 20:28.) Matthew is interpreted 'given,' because by the Lord's bounty he was made an Evangelist of a Publican.
James the son of Alphæus, and Thaddæus.

It is well said, the son of Alphæus, that is, 'of the just,' or 'the learned;' for he not only overthrew the vices of the flesh, but also despised all care of the same. And of what he was worthy the Apostles are witness, who ordained him Bishop of the Church of Jerusalemb. And ecclesiastical history (Hegesippus. ap. Euseb. ii. 23.) among other things tells of him, that he never ate flesh, drunk neither wine nor strong drink, abstained from the bath and linen garments, and night and day prayed on his bended knees. And so great was his merit, that he was called by all men, 'The just.' Thaddæus is the same whom Luke calls Jude of James, (that is, the brother of James,) whose Epistle is read in the Church, in which he calls himself the brother of James.

Jude is interpreted 'having confessed,' because he confessed the Son of God.

(e Beda.) This James is he who in the Gospels, and also in the Epistle to the Galatians, is called the Lord's brother. For Mary the wife of Alphæus was the sister of Mary the mother of the Lord; John the Evangelist calls her Mary the wife of Cleophas, probably because Cleophas and Alphæus were the same person. Or Mary herself on the death of Alphæus after the birth of James married Cleophas.

Thaddæus or Lebbæus is interpreted 'a little heart,' that is, a heart-worshipper.

"James the son of Zebedee, and John his brother; Philip, and Bartholomew; Thomas, and Matthew the publican; James the son of Alphaeus, and Lebbaeus, whose surname was Thaddaeus; Simon the Canaanite, and Judas Iscariot, who also betrayed Him." See the humility of Matthew, how he ranked himself after Thomas. And when he came to Judas, he did not say, "the defiled, the enemy of God," but he named him Iscariot after his place of birth. For there was another Judas, who was also called Lebbaeus and Thaddaeus. So there are two James's, the son of Zebedee and the son of Alphaeus, and two Judas's, Thaddaeus and the betrayer. And three Simons, Peter, the Canaanite, and the betrayer; for Judas Iscariot was also called Simon.

Philip, the mouth of the lamp; such a one should be a preacher: "Your word is well tried with fire" (Ps 119:140). Bartholomew, the son of him who curbs the waters. This is what Christ is called: "He binds up the waters in thick clouds" (Jb 26:8). Then James, the son of Zebedee, who was killed by Herod, who is called the supplanter. And John, who is called grace: "By the grace of God I am what I am" (1 Cor 15:10). He does not follow the order of rank as Mark does. Then Thomas and Matthew. The others do not say, "tax collector," but he mentions it out of humility. Again, the others place Matthew before Thomas; but he does the opposite. Thomas means abyss, on account of the depth of faith. Matthew means forgiving, as in Ephesians (4:32): "Forgiving one another, as Christ forgave you." James the son of Alpheus, to distinguish him from the other. He is called a brother of the Lord, because he was a cousin. Thaddeus, the brother of James. He is called Jude, who wrote an epistle, and means heart: "Keep your heart with all vigilance" (Pr 4:23).

(vid. Greg. Hom. in Ev. xvii. 1.) And this doubling seems to have some reference to the two precepts of charity, or to the two Testaments.

(non occ.) They are named two and two to express their union as yoke-fellows.