Bede

What great virtue there was in the discourse of the Baptist is manifested by this, that the Publicans, nay even the soldiers, he compelled to seek counsel of him concerning their salvation, as it follows, But the publicans came.

He commands them therefore that they exact no more than what was presented to them, as it follows, And he said unto them, Do no more than what is appointed to you. But they are called publicans who collect the public taxes, or who are the farmers of the public revenue or public property? Those also who pursue the gain of this world by traffic are denoted by the same titles, all of whom, each in his own sphere, he equally forbids to practise deceit, that so by first keeping themselves from desiring other men's goods, they might at length come to share their own with their neighbours. It follows, But the soldiers also asked him. In the justest manner he advises them not to seek gain by falsely accusing those whom they ought to benefit by their protection. Hence it follows, And he says unto them, Strike no one, (i. e. violently,) nor accuse any falsely, (i. e. by unjustly using arms,) and be content with your wages.

And he answered them, saying: He who has two tunics, let him give to him who has none; and he who has food, let him do likewise. Because a tunic is more necessary for our use than a cloak, it pertains to the fruit worthy of repentance. That we ought not only to share our exterior and less necessary things but also those very necessary to us with our neighbors, namely either the food by which we live carnally or the tunic by which we are clothed. For it is written in the law: You shall love your neighbor as yourself (Mark XII), he is convicted of loving his neighbor less who does not share with him in his necessity even in those things that are necessary to himself. Therefore, the command is given to share two tunics with a neighbor because this could not be said of one since if one tunic is divided, no one is clothed. For in a half tunic, both he who receives and he who gives remain naked. Among these things, it must be known how much the works of mercy avail, since they are particularly commanded as worthy fruits of repentance. Hence also Truth itself says: Give alms, and behold all things are clean for you.

But how could he answer them who in secret thought that he was Christ, except it was that they not only thought, but also (as another Evangelist declares) sending Priests and Levites to him asked him whether he was the Christ or not?

The Holy Spirit also may be understood by the word fire, for He kindles with love and enlightens with wisdom the hearts which He fills. Hence also the Apostles received the baptism of the Spirit in the appearance of fire. There are some who explain it, that now we are baptized with the Spirit, hereafter we shall be with fire, that as in truth we are now born again to the remission of our sins by water and the Spirit, so then we shall be cleansed from certain lighter sins by the baptism of purifying fire.

For by the floor is represented the present Church, in which many are called but few are chosen. The purging of which floor is even now carried on individually, when every perverse offender is either cast out of the Church for his open sins, (by the hands of the Priesthood,) or for his secret sins is after death condemned by Divine judgment. And at the end of the world it will be accomplished universally, when the Son of Man shall send His angels, and they shall gather out of His kingdom every thing that has offended.

I indeed baptize you with water. However, one mightier than I is coming, whose sandal strap I am not worthy to untie. John does not baptize with the spirit, but with water, because he, being unable to absolve sins, washes the bodies of the baptized with water but does not wash the mind through forgiveness. So why does he baptize who does not remit sins through baptism? Except that by maintaining the order of his forerunning, he who was born before Christ by birth would also be a forerunner to the Lord by baptizing Him, and thus he who was made the forerunner of Christ by preaching would also become His forerunner by baptizing in imitation of the sacrament. It was a custom among the ancients that if anyone did not wish to take as his wife the one who was properly his to take, the one who came as a suitor by the right of kinship would untie his sandal. What, then, was Christ among men except the bridegroom of the holy Church? About whom the same John also says, "He who has the bride is the bridegroom" (John III). But because people thought John to be the Christ, which John himself denies, it is proper that he declares himself unworthy to untie His sandal strap. As if he said openly: I cannot lay bare the feet of the Redeemer, because I, unworthy, do not usurp the name of the bridegroom. However, this can be understood in another way: for who does not know that sandals are made from dead animals? When the Lord incarnate came, He appeared as if shod, who in His divinity assumed the mortality of our corruption. But the mystery of this incarnation the human eye is not able to penetrate. For it cannot at all be investigated how the Word is made flesh, how the supreme and life-giving Spirit is animated in the womb of the mother, how He who has no beginning both exists and is conceived. Therefore, the sandal strap is the binding of the mystery. Thus, John cannot untie the strap of His sandal, because the mystery of the incarnation he also cannot sufficiently investigate, he who recognized it through the spirit of prophecy.

He will baptize you with the Holy Spirit and fire. This is both the cleansing of sanctification and the testing of tribulation. However, the same Holy Spirit can also be understood as signified by the name of fire. Because He both enkindles through love and illuminates the hearts which He fills with wisdom. Hence, to those to whom it was said, "John indeed baptized with water, but you will be baptized with the Holy Spirit" (Acts XI), the same baptism of the spirit is perceived in the vision of fire. Some explain it in this way, that in the present we are baptized in the spirit, and in the future we will be baptized in fire. Namely, just as now we are reborn in the remission of all sins from water and the spirit, so also then, from certain light sins which have adhered to us as we go from here, we are cleansed by the baptism of purgatorial fire before the final judgment. As the Apostle says: "If anyone builds on this foundation, gold, silver, precious stones, wood, hay, straw, each one's work will be made clear by fire. If anyone's work remains which he has built on it, he will receive a reward. If anyone's work is burned, he will suffer loss; but he himself will be saved, though as through fire" (I Corinthians III). Although this can also be understood of the fire of tribulation applied to us in this life, yet if anyone takes this as referring to the fire of future purification, it should be carefully considered, because he said that he can be saved through fire, not someone who builds on the foundation of Christ with iron, bronze, or lead, that is, greater and harder sins which are already unresolvable, but with wood, hay, and straw, that is, the smallest and lightest sins, which fire easily consumes. Nevertheless, it should be known that no one will obtain any purification even from the smallest sins there, unless he has acted with good deeds in this life so that he may deserve to obtain it there.

And he will gather his wheat into his barn, but the chaff he will burn with unquenchable fire. And the Lord himself ended the parable of the good seed, upon which the enemy man sowed tares, by saying: And in the time of the harvest, I will say to the reapers: Gather first the tares, and bind them in bundles to burn; but gather the wheat into my barn (Matthew XIII). Clearly teaching that the impious and sinners will be delivered to the fire of Gehenna, while the holy will be crowned with heavenly glory. Indeed, this differs between the chaff and the tares: for the chaff comes forth from no other seed than the wheat, although it degenerates from the nobility of a good root. However, the tares differ not only by their fruit but are also generated from entirely different origins. The chaff are those who are imbued with the mystic rituals of the same faith as the elect, but they differ from their solid perfection, either by the lightness of their works or by the emptiness of their faithlessness. The tares, however, are those who are not even worthy to hear the words of faith, and thus, they are separated from the lot of the good, both in deeds and profession. And so, in this world's field, one is of the elect, and two are the fruits of the reprobate, since all that the enemy sows is subject to flames, and what is graver, many of those things which the good sower casts are either snatched by birds, dried out by the sun, choked by thorns, or certainly turned into chaff and perish. Only the wheat, created of good soil and proven worthy by patience, will be stored in the heavenly barn of the elect. Similarly, according to another parable, not only the fishes that decline the nets of Apostolic faith reside in the deep darkness of sinners, but many, dragged to the shore of extreme discretion among the good, then deserve to be sent to outer darkness because of their wickedness. He calls the fire of Gehenna unquenchable in two ways: that it can never be extinguished, nor will it ever cease to torment those whom it punishes, but will inflict (so to speak) an immortal death. This is in distinction to that most sacred fire, which he had earlier mentioned the elect of Christ would be baptized with. Concerning this, the Psalmist also says: You have tested us by fire, as silver is tested by fire (Psalm LXV). And a little later: We did not stay in that state forever, but we passed through fire and water, and you brought us into refreshment. I will enter into your house with burnt offerings (Ibid.), that is, the distresses of pressures conquered, I will penetrate the courts of your heavenly kingdom with thanksgiving.

However, Herod the tetrarch, being reproved by him concerning Herodias, the wife of his brother, and concerning all the evil deeds which Herod had done, added this above all, and shut John up in prison. These matters are more fully recounted by Matthew and Mark, who narrate that John, by the schemes of Herodias, was not only bound but also beheaded. This is to be understood as not having occurred at that time but, according to John's Gospel, after some signs had been performed by the Lord and his baptism having already become widely known, yet mentioned here by this Evangelist to emphasize Herod's wickedness. For while the unlearned populace thronged to John's preaching, the soldiers believed, the publicans repented, and the whole populace received baptism in general, on the contrary, he not only despised him but did not hesitate to kill him. Through the deeper understanding of the mystery, because John the Evangelist undertook to write about the divinity of Christ, while the other three about his ministry in humanity, John the Baptist, indeed holding the type of the old law (which is the precursor of grace), beautifully attesting that while John the Evangelist was still preaching and baptizing as the precursor of the Lord, the Lord himself made and baptized more disciples. Mystically teaching him to have been the eternal God throughout the ages and the teacher of the faithful peoples through the law before he was born in the flesh. Beautifully also do the other Evangelists begin the Lord's preaching after John was handed over to prison, whose role it was, after the law corrupted by the Jews and defiled as if by the darkness of prison's ignorance and the savage tradition, to reveal the heavenly doctrine of the Lord appearing in the flesh and acting through the flesh, as if coming into Galilee.