XII. And therefore He came after Christ, that a Comforter should not be lacking unto us; but Another Comforter, that you might acknowledge His co-equality. For this word Another marks an Alter Ego, a name of equal Lordship, not of inequality. For Another is not said, I know, of different kinds, but of things consubstantial. And He came in the form of Tongues because of His close relation to the Word. And they were of Fire, perhaps because of His purifying Power (for our Scripture knows of a purifying fire, as any one who wishes can find out), or else because of His Substance. For our God is a consuming Fire, and a Fire burning up the ungodly; though you may again pick a quarrel over these words, being brought into difficulty by the Consubstantiality. And the tongues were cloven, because of the diversity of Gifts; and they sat to signify His Royalty and Rest among the Saints, and because the Cherubim are the Throne of God. And it took place in an Upper Chamber (I hope I am not seeming to any one over tedious), because those who should receive it were to ascend and be raised above the earth; for also certain upper chambers are covered with Divine Waters, by which the praise of God are sung. And Jesus Himself in an Upper Chamber gave the Communion of the Sacrament to those who were being initiated into the higher Mysteries, that thereby might be shown on the one hand that God must come down to us, as I know He did of old to Moses; and on the other that we must go up to Him, and that so there should come to pass a Communion of God with men, by a coalescing of the dignity. For as long as either remains on its own footing, the One in His Glory the other in his lowliness, so long the Goodness of God cannot mingle with us, and His lovingkindness is incommunicable, and there is a great gulf between, which cannot be crossed; and which separates not only the Rich Man from Lazarus and Abraham's Bosom which he longs for, but also the created and changing natures from that which is eternal and immutable.
XIII. This was proclaimed by the Prophets in such passages as the following:— The Spirit of the Lord is upon me; and, There shall rest upon Him Seven Spirits; and The Spirit of the Lord descended and led them; and The spirit of Knowledge filling Bezaleel, the Master-builder of the Tabernacle; and, The Spirit provoking to anger; and the Spirit carrying away Elias in a chariot, and sought in double measure by Elissæus; and David led and strengthened by the Good and Princely Spirit. And He was promised by the mouth of Joel first, who said, And it shall be in the last days that I will pour out of My Spirit upon all flesh (that is, upon all that believe), and upon your sons and upon your daughters, and the rest; and then afterwards by Jesus, being glorified by Him, and giving back glory to Him, as He was glorified by and glorified the Father. And how abundant was this Promise. He shall abide for ever, and shall remain with you, whether now with those who in the sphere of time are worthy, or hereafter with those who are counted worthy of that world, when we have kept Him altogether by our life here, and not rejected Him in so far as we sin.
XIV. This Spirit shares with the Son in working both the Creation and the Resurrection, as you may be shown by this Scripture; By the Word of the Lord were the heavens made, and all the power of them by the breath of His Mouth; and this, The Spirit of God that made me, and the Breath of the Almighty that teaches me; and again, You shall send forth Your Spirit and they shall be created, and You shall renew the face of the earth. And He is the Author of spiritual regeneration. Here is your proof:— None can see or enter into the Kingdom, except he be born again of the Spirit, and be cleansed from the first birth, which is a mystery of the night, by a remoulding of the day and of the Light, by which every one singly is created anew. This Spirit, for He is most wise and most loving, if He takes possession of a shepherd makes him a Psalmist, subduing evil spirits by his song, and proclaims him King; if he possess a goatherd and scraper of sycamore fruit, He makes him a Prophet. Call to mind David and Amos. If He possess a goodly youth, He makes him a Judge of Elders, even beyond his years, as Daniel testifies, who conquered the lions in their den. If He takes possession of Fishermen, He makes them catch the whole world in the nets of Christ, taking them up in the meshes of the Word. Look at Peter and Andrew and the Sons of Thunder, thundering the things of the Spirit. If of Publicans, He makes gain of them for discipleship, and makes them merchants of souls; witness Matthew, yesterday a Publican, today an Evangelist. If of zealous persecutors, He changes the current of their zeal, and makes them Pauls instead of Sauls, and as full of piety as He found them of wickedness. And He is the Spirit of Meekness, and yet is provoked by those who sin. Let us therefore make proof of Him as gentle, not as wrathful, by confessing His Dignity; and let us not desire to see Him implacably wrathful. He too it is who has made me today a bold herald to you—if without rest to myself, God be thanked; but if with risk, thanks to Him nevertheless; in the one case, that He may spare those that hate us; in the other, that He may consecrate us, in receiving this reward of our preaching of the Gospel, to be made perfect by blood.
XV. They spoke with strange tongues, and not those of their native land; and the wonder was great, a language spoken by those who had not learned it. And the sign is to them that believe not, and not to them that believe, that it may be an accusation of the unbelievers, as it is written, With other tongues and other lips will I speak unto this people, and not even so will they listen to Me says the Lord. But they heard. Here stop a little and raise a question, how you are to divide the words. For the expression has an ambiguity, which is to be determined by the punctuation. Did they each hear in their own dialect so that if I may so say, one sound was uttered, but many were heard; the air being thus beaten and, so to speak, sounds being produced more clear than the original sound; or are we to put the stop after “they Heard,” and then to add “them speaking in their own languages” to what follows, so that it would be speaking in languages their own to the hearers, which would be foreign to the speakers? I prefer to put it this latter way; for on the other plan the miracle would be rather of the hearers than of the speakers; whereas in this it would be on the speakers' side; and it was they who were reproached for drunkenness, evidently because they by the Spirit wrought a miracle in the matter of the tongues.
XVI. But as the old Confusion of tongues was laudable, when men who were of one language in wickedness and impiety, even as some now venture to be, were building the Tower; for by the confusion of their language the unity of their intention was broken up, and their undertaking destroyed; so much more worthy of praise is the present miraculous one. For being poured from One Spirit upon many men, it brings them again into harmony. And there is a diversity of Gifts, which stands in need of yet another Gift to discern which is the best, where all are praiseworthy. And that division also might be called noble of which David says, Drown O Lord and divide their tongues. Why? Because they loved all words of drowning, the deceitful tongue. Where he all but expressly arraigns the tongues of the present day which sever the Godhead. Thus much upon this point.
Source: Orations (New Advent)