Matthew 13:50

And those who attended to the net that was cast into the sea are Jesus Christ, the master of the net, and "the angels who came and ministered to him." It is not until the net is filled full that they will draw it up from the sea and carry it to the shore beyond the sea—namely, to things beyond this life—but not until the "fullness of the Gentiles" has been drawn into it. But when that fullness has come, then they draw it up from things here below and carry it to what is figuratively called the shore. There it will be the work of those who have drawn it up to sit by the shore, there to settle themselves in order that they may put each of the good fish in its own proper place, into the right vessel. But they will cast outside those that are of an opposite character and are called bad. By "outside" is meant the furnace of fire, as the Savior interpreted it, saying, "So shall it be at the consummation of the age. The angels shall come forth and separate the wicked from among the righteous and shall cast them into the furnace of fire." Only it must be observed that we are already taught by the parable of the tares and the other similitudes set forth that the angels are to be entrusted with the power to distinguish and separate the evil from the righteous. For it is said above, "The Son of Man shall send his angels, and they shall gather out of his kingdom all things that cause stumbling, and those who do iniquity, and shall cast them into the furnace of fire. There shall be the weeping and gnashing of teeth." But here it is said, "The angels shall come forth and sever the wicked from among the righteous and shall cast them into the furnace of fire."

After this, that we may not be confident in the gospel merely preached, nor think that faith only suffices us for salvation, He utters also another, an awful parable. Which then is this? That of the net.

"For the kingdom of Heaven is like unto a net, that was cast into the sea, and gathered of every kind; which, when it was full, they drew to shore, and sat down, and gathered the good into vessels, but cast the bad away."

And wherein doth this differ from the parable of the tares? For there too the one are saved the other perish; but there, for choosing of wicked doctrines; and those before this again, for not giving heed to His sayings, but these for wickedness of life; who are the most wretched of all, having attained to His knowledge, and being caught, but not even so capable of being saved.

Yet surely He saith elsewhere, that the shepherd Himself separates them, but here He saith the angels do this; and so with respect to the tares. How then is it? At one time He discourses to them in a way more suited to their dullness, at another time in a higher strain.

And this parable He interprets without so much as being asked, but of His own motion He explained it by one part of it, and increased their awe. For lest, on being told, "They cast the bad away," thou shouldest suppose that ruin to be without danger; by His interpretation He signified the punishment, saying, "They will cast them into the furnace." And He declared the gnashing of teeth, and the anguish, that it is unspeakable.

Seest thou how many are the ways of destruction? By the rock, by the thorns, by the wayside, by the tares, by the net. Not without reason therefore did He say, "Broad is the way that leadeth to destruction, and many there be which go away by it."

For when the net shall be drawn to the shore, then shall be shown the true test for separating the fishes.

For when the end of the world shall be come, then shall be shown the true test of separating the fishes, and as in a sheltered harbour the good shall be sent into the vessels of heavenly abodes, but the flame of hell shall seize the wicked to be dried up and withered.

But when the consummation and end of the world comes, as he explains more clearly below, then the fishing net will be drawn to the shore: then the true judgment of separating the fish will be displayed, and as if in a very calm harbor, the good will be placed in the vessels of celestial mansions: but the wicked will be received to be burned and dried up by the flame of hell.

For behold, concerning the description of hell it is said: There shall be weeping and gnashing of teeth. But because present joys are followed by perpetual lamentations, here, dearest brothers, flee vain joy if you dread weeping there. For no one can both rejoice here with the world and reign there with the Lord. Therefore restrain the fleeting pleasures of temporal joy, subdue the lusts of the flesh. Whatever in the soul smiles upon you from the present age, let it become bitter from the consideration of eternal fire. Whatever rejoices in the mind in a childish manner, let the censure of youthful discipline restrain it, so that while you willingly flee temporal things, you may seize eternal joys without labor, through the grace of our Lord Jesus Christ.

(ubi sup.) To fear becomes us here, rather than to expound for the torments of sinners are pronounced in plain terms, that none might plead his ignorance, should eternal punishment be threatened in obscure sayings.

Every deed, be it good or evil, is called the food of the soul. And the soul, too, has teeth, but they are spiritual in nature. Then the corrupted soul will gnash its teeth, that is, grind together its now impotent faculties of action, because it practiced such things.

There follows the punishment of sense: and shall cast them into the furnace of fire. This is explained as above. But there is a question why the Lord repeated this, because it seems to be the same as the parable of the weeds. It must be said that it is the same in a certain respect, because here by the net are understood both the good and the bad; hence it signifies those who have not been cut off from the Church. But by the weeds are signified those who have been cut off by a diversity of teachings, and these are not of the Church.