Acts 2:3

“This is the Spirit that was given to the apostles in the form of fiery tongues.”

“They partook of fire, not of burning but of saving fire. This is a fire that consumes the thorns of sins but gives luster to the soul. This is now coming upon you also in order to strip away and consume your sins, which are like thorns, and to brighten yet more that precious possession of your souls, and to give you grace, the same given then to the apostles. The Spirit descended upon them in the form of fiery tongues, that they might crown themselves with new and spiritual diadems by fiery tongues upon their heads. As a fiery sword had barred of old the gates of paradise, a fiery tongue that brought salvation restored the gift.”

“"And there appeared unto them," it says, "cloven tongues like as of fire." Observe how it is always, "like as;" and rightly: that you may have no gross sensible notions of the Spirit. Also, "as it were of a blast:" therefore it was not a wind. "Like as of fire." For when the Spirit was to be made known to John, then it came upon the head of Christ as in the form of a dove: but now, when a whole multitude was to be converted, it is "like as of fire. And it sat upon each of them." This means, that it remained and rested upon them. For the sitting is significant of settledness and continuance.”

“The roll of a book is given him, and Ezekiel ate what he was about to utter. "And it became in his mouth," it is said, "as honey for sweetness." And again the hand of God touches the tongue of another Prophet; but here it is the Holy Ghost Himself: so equal is He in honor with the Father and the Son. And again, on the other hand, Ezekiel calls it "Lamentations, and mourning, and woe." To them it might well be in the form of a book; for they still needed similitudes. Those had to deal with only one nation, and with their own people; but these with the whole world, and with men whom they never knew. Also Elisha receives the grace through the medium of a mantle; another by oil, as David; and Moses by fire, as we read of him at the bush. But in the present case it is not so; for the fire itself sat upon them. But the story shows, that it is the same here as there. For you are not to stop at this, that "there appeared unto them cloven tongues" but note that they were "of fire." Such a fire as this is able to kindle infinite fuel. Also, it is well said, Cloven, for they were from one root; that you may learn, that it was an operation sent from the Comforter.”

“Therefore, when he sent the Holy Spirit he manifested him visibly in two ways—by a dove and by fire: by a dove upon the Lord when he was baptized, by fire upon the disciples when they were gathered together.… The dove shows that those who are sanctified by the Spirit should be without guile. That their simplicity should not continue cold is shown us by the fire. Nor let it trouble you that the tongues were divided; for tongues are diverse, therefore the appearance was that of cloven tongues. "Cloven tongues," it said, "as of fire, and it sat upon each of them." There is a diversity of tongues, but the diversity of tongues does not imply schisms. Do not be afraid of separation in the cloven tongues, but in the dove recognize unity.”

“And there appeared to them separate tongues: So then, the thorns were consumed, that is, the transgression from Adam was consumed.”

“A matter of greatest importance compels [me] not to keep silent long as to why it is that the fostering Spirit is given to them as flame [but] at the River Jordan as a dove; I shall fitly sing this [mystery], and I shall fulfill the promises owed if [the Spirit] brings his gifts. These two signs are allegories that there should be simplicity, which very appropriately [this] bird loves, [and] that, lest [this simplicity] be sluggish [and] grow lukewarm without the fire of doctrine, there should also be faith that has been kindled. There [in the Jordan] he appointed by means of the waters [that they be] of one mind; here [with fire] he bids that they teach with flaming words. Love presses hard upon their minds; zeal burns in their words.”

“For you have heard that the Holy Spirit appeared upon the disciples in tongues of fire and gave them knowledge of all languages. What indeed was signified by this miracle, except that the holy Church, filled with the same Spirit, would speak with the voice of all nations? Those who attempted to build a tower against God lost the communion of one language, but in these who humbly feared God all languages were united. Here therefore humility merited virtue; there pride earned confusion. But we must ask why the Holy Spirit, coeternal with the Father and the Son, appeared in fire; why in fire and tongues together; why He is shown sometimes in a dove, sometimes in fire; why He appeared over the only-begotten Son in the form of a dove, and over the disciples in fire—so that He neither came upon the Lord in fire nor was shown over the disciples in a dove. Let us therefore return by solving these four questions we have proposed. For the Spirit, coeternal with the Father and Son, is shown in fire because God is incorporeal, ineffable, and invisible fire, as Paul attests: "Our God is a consuming fire." God is indeed called fire because through Him the rust of sins is consumed. Of this fire the Truth says: "I came to cast fire upon the earth, and what do I desire except that it burn?" For earthly hearts are called earth, which, while they always heap up base thoughts within themselves, are trampled by malignant spirits. But the Lord casts fire upon the earth when He kindles the hearts of carnal people with the breath of the Holy Spirit. And the earth burns when the carnal heart, cold in its wicked pleasures, abandons the desires of the present age and is set ablaze with love of God. Rightly therefore the Spirit appeared in fire, since from every heart He fills He shakes off the torpor of coldness and kindles it with desire for His eternity. Moreover He was shown in tongues of fire because the same Spirit is coeternal with the Son, and tongue has the greatest kinship with word. For the Son is the Word of the Father. And because the Spirit and the Word are of one substance, the same Spirit had to be shown in a tongue. Or certainly, because word proceeds through the tongue, the Spirit appeared in tongues because whoever is touched by the Holy Spirit confesses God's Word, that is, the only-begotten Son, and cannot deny God's Word because he now has the tongue of the Holy Spirit. Or certainly the Spirit appeared in tongues of fire because all whom He fills He makes both burning and speaking at once. Teachers have tongues of fire because, when they preach that God is to be loved, they set the hearts of their hearers aflame. For the speech of a teacher is idle if it cannot provide the fire of love.”

“And there appeared to them divided tongues as of fire. For the Holy Spirit appeared in fire and tongues, because all whom He fills He makes both burning and speaking. Burning indeed from themselves, and speaking about themselves. At the same time, indicating that the holy Church, extended to the ends of the world, was to speak with the voice of all nations.”

“And it sat upon each of them. What is said to have sat is an indication of royal power. Or certainly because His rest is indicated in the saints.”

“And there appeared to them divided tongues as of fire, and one sat upon each of them, etc. This fire, not this fire. For in Greek it is πυρὸς, not πῦρ. This distinction would be easier to see if, adding a word, it were said: Divided tongues appeared as if of burning fire, or as if of shining fire, so that it may be understood that the tongues were divided in the appearance of fire.”

“"Divided tongues, as of fire." The Lord, who suffered in the flesh by voluntary passion and rose from the dead, co-raised with Himself us also, who were dead in sin, and destroyed the power of the devil. Therefore, from Pascha until Pentecost, we do not make prostrations during prayer, celebrating the victory over our enemies: "They stumbled and fell, but we have risen and stand upright" (Ps. 19:9). But at the appearance to us of the Holy Spirit in fiery tongues, we bow our knees, unable to endure the sight and showing that through the Holy Spirit we have come to know the perfect worship of the Holy Trinity, because God "is spirit, and those who worship Him must worship in spirit and truth" (John 4:24). What is most wonderful of all is that the tongues divided "and rested one upon each of them." He says well that they divided, so that you might learn that the power sent by the Comforter is one and the same. He also says well "as of fire" and "as of a rushing mighty wind," so that you might not think anything sensible concerning the Spirit. Therefore, it was not simply wind, not simply fire, but the Holy Spirit appearing there. Observe: when John saw the Holy Spirit, he saw Him in the form of a dove, but the apostles needed to see Him in the form of fire. "Rested one upon each of them," that is, they remained and began to dwell, because the expression "rested" is a sign of firm and permanent abiding. Upon whom did the Holy Spirit rest — upon the twelve only, or upon the hundred and twenty? Clearly upon all, because the apostle Peter does not cite the words of the prophet in vain when he says: "And it shall come to pass in the last days, says God, I will pour out of My Spirit upon all flesh" (v. 17). And they did not simply receive, but "were all filled with the Holy Spirit," and moreover all of them, not the apostles only. Observe: when they "continued with one accord in prayer and supplication" (Acts 1:14), when they were filled with love, then the Spirit descends. Why then did He appear in the form of fire? In order to show that He is of one and the same essence with Him Who appeared above the bush also in the form of fire. And He rested upon their heads; and from the head He filled the entire person; and fire was seen upon their heads — not burning, but sanctifying and illuminating. Why then did they receive tongues not upon their mouths but upon their heads? Not upon the tongue, that is, not upon the physical organ was the Spirit given, lest they think that they were uttering from their own bellies and from their own mouths what they did not possess. But just as waters rising to the sky occupy the summits of mountains and only from the heights descend into the valleys, so the grace of the Spirit, having occupied the upper part of the head as though it were a mountain, then spread to the brain, then to the mouth and to the heart, and from the head filled the entire person completely. Why then, I repeat again, upon the head? Because the apostles were being ordained at that time as teachers of the whole world, and ordination is performed in no other way than upon the head. Thus, by the tongues being above their heads, the form of ordination is shown, because ordination is performed through the laying on of hands upon the head, and this form of ordination remains in force even to this day. Since the descent of the Holy Spirit now occurs in an invisible manner, the Gospel book is placed upon the head of the one being ordained as a bishop; and when it is placed, one should see in this nothing other than a fiery tongue resting upon the head — a tongue on account of preaching, fiery by virtue of the words "I came to cast fire upon the earth" (Luke 12:49). He did not say that the tongues settled or were placed, but "rested"; nor did he say "occupied the surface," but "rested upon each of them," in order to show that every man who performs the sacred ministry is a throne of God.”

“To appear denotes a sensible effect with express signification, as the Holy Spirit appeared in a dove. And since, just as the divine persons are distinct, so they can be distinctly signified both by signs and by names, therefore any person can appear by itself, and apparition can belong to all, whether together or to any one by itself. Whence that the Holy Spirit is said to have appeared in tongues of fire and in a dove, this is not on account of a new bond or a special effect, but on account of the union which exists between the thing signified and the sign specially and by manner and origin assigned to it.”

“After an interval of ten days, He sent upon the Apostles the promised Holy Spirit, through whom the Church of the nations was gathered together and ordered according to the diverse distributions of offices and graces. In order to inflame to charity, he sent the fire of the Holy Spirit on the day of Pentecost. And because no one is filled with this fire unless he asks, seeks, and knocks with an urgent and importunate desire of hope: therefore he did not send it immediately after the ascension, but with an interval of ten days interposed, in which the disciples, fasting, praying, and groaning, disposed themselves for the reception of the Holy Spirit. And through this, just as he observed the due hour in suffering, so also in rising, so in ascending into heaven, so in sending the Holy Spirit, both on account of the foundation of the three aforesaid virtues and on account of the many mysteries that are implied in these times.”

“At first He had given the Holy Spirit to the world in a secret way, but He did it manifestly after He had ascended on high, for this Holy Spirit was the cleansing, enlightening, and perfecting Hierarch, and the Holy Spirit came down into the heavenly and sub-heavenly hierarchies. And so, "suddenly there came a sound from heaven, as of a violent wind." The Holy Spirit came down as a means of cleansing: hence, the "violent wind"; as a means of instruction, hence "there appeared to them parted tongues as of fire"; as a means of perfection, hence the tongues of fire "settled upon each of them." From Him come forth the free gifts of grace.”

“The Spirit is distributed as tongues of fire, and rests upon each one individually, obviously upon the one hundred and twenty who were also present in the house. For the grace of the Paraclete, though from one root, was being portioned into diverse gifts. And a tongue was needed to proclaim the great things of God, consuming every opposing thing like fire. Fire in form, because the Spirit is God, and so that thereby He might reveal the likeness to the Father, who therefore appears to Moses on the bush. (see Ex. 3:2) And He sits upon each one individually, indicating stability and permanence. For 'He sat down,' it signifies that He remained and ceased again. It means that concerning John it was about to be known to one man, as a dove is seen coming upon the head of Christ. (see Jn. 1:32) But when the whole multitude was to be turned, like fire. And what the Hebrews from old used to think about God, that He is consuming fire. (see Heb. 12:29, Deut. 4:24) Yet also when the disciples persevered in prayer and supplication, and in mutual love, then the guiding Spirit came upon them.”