Mark 1:16

(ubi sup.) It may be asked, how he could call two fishers from each of the boats, (first, Peter and Andrew, then having gone a little further, the two others, sons of Zebedee,) when Luke says that James and John were called to help Peter and Andrew, and that it was to Peter only that Christ said, Fear not, from this time thou shalt catch men; (Luke 5:10) he also says, that at the same time, when they had brought their ships to land, they followed him. We must therefore understand that that transaction which Luke intimates happened first, and afterwards that they, as their custom was, had returned to their fishing. So that what Mark here relates happened afterwards; for in this case they followed the Lord, without drawing their boats ashore, (which they would have done had they meant to return,) and followed Him, as one calling them, and ordering them to follow.

As the Evangelist John relates, Peter and Andrew were disciples of the Forerunner, but seeing that John had borne witness to Jesus, they joined themselves to him; afterwards, grieving that John had been cast into prison, they returned to their trade. Wherefore there follows, casting nets into the sea, for they were fishers.

We must know also, that action is first called, then contemplation; for Peter is the type of the active life, for he was more ardent than the others, just as the active life is the more bustling; but John is the type of the contemplative life, for he speaks more fully of divine things.

(non occ.) The Evangelist, having mentioned the preaching of Christ to the multitude, goes on to the calling of the disciples, whom he made ministers of his preaching, whence it follows, And passing along the sea of Galilee, &c.

Further, we are mystically carried away to heaven, like Elias, by this chariot, drawn by these fishers, as by four horses. On these four corner-stones the first Church is built; in these, as in the four Hebrew letters, (יהוה) we acknowledge the tetragrammaton, the name of the Lord, we who are commanded, after their example, to hear the voice of the Lord, and to forget (Ps. 45:11) the people of wickedness, and the house of our fathers' conversation, which is folly before God, and the spider's net, in the meshes of which we, like gnats, were all but fallen, and were confined by things vain as the air, which hangs on nothing; loathing also the ship of our former walk. For Adam, our forefather according to the flesh, is clothed with the skins of dead beasts; but now, having put off the old man, with his deeds, following the new man we are clothed with those skins of Solomon, with which the bride rejoices that she has been made beautiful. (Cant. 1:4. Vulg.) Again, Simon, means obedient; Andrew, manly; James, supplanter;f John, grace; by which four names, we are knit together into God's host;g by obedience, that we may listen; by manliness, that we do battle; by overthrowing, that we may persevere; by grace, that we may be preserved. (supplantatione) Which four virtues are called cardinal; for by prudence, we obey; by justice, we bear ourselves manfully; by temperance, we tread the serpent underfoot; by fortitude, we earn the grace of God.