Chapter 32.
72 Petilianus said: "For although there is only one baptism, yet it is consecrated in three several grades. John gave water without the name of the Trinity, as he declared himself, saying, ‘I indeed baptize you with water unto repentance: but He that comes after me is mightier than I, whose shoes I am not worthy to bear; He shall baptize you with the Holy Ghost, and with fire.' Christ gave the Holy Spirit, as it is written, ‘He breathed on them, and says unto them, Receive the Holy Ghost,' And the Comforter Himself came on the apostles as a fire burning with rustling flames. O true divinity, which seemed to blaze, not to burn! As it is written, ‘And suddenly there came a sound from heaven as of a rushing mighty wind, and it filled all the house where the apostles were sitting. And there appeared unto them cloven tongues, like as of fire, and it sat upon each of them. And they were all filled with the Holy Ghost, and began to speak with other tongues, as the Spirit gave them utterance.' But you, O persecutor, have not even the water of repentance, seeing that you hold the power not of the murdered John, but of the murderer Herod. You therefore, O traditor, have not the Holy Spirit of Christ; for Christ did not betray others to death, but was Himself betrayed. For you, therefore, the fire in the spirit in Hades is full of life—that fire which, surging with hungry tongues of flame, will be able to burn your limbs to all eternity without consuming them, as it is written of the punishment of the guilty in hell, ‘Neither shall their fire be quenched.'"
73. Augustine answered: You are the calumnious slanderer, not the truthful arguer. Will you not at length cease to make assertions of a kind which, if you do not prove them, can apply to nobody; and even if you prove them, certainly cannot apply to the unity of the whole world, which is in the saints as in the wheat of God? If we too were pleased to return calumnies for calumnies, we too might possibly be able to give vent to eloquent slanderers. We too might use the expression, "With rustling flames;" but to me an expression never sounds in any way eloquent which is inappropriate in its use. We too might say, "Surging with hungry tongues of flame;" but we do not wish that the tongues of flame in our writings, when they are read by any one in his senses, should be judged hungry for want of the sap of weightiness, or that the reader himself, while he finds in them no food of useful sentiments, should be left to suffer from the hunger of excessive emptiness. See, I declare that your Circumcelliones are burning, not with rustling but with headlong flames. If you answer, What is that to us? Why do not you, when you reproach with any one whom you will, not listen in turn to our answer, We too know nothing of it? If you answer, You do not prove the fact, why may not the whole world answer you in turn, Neither do you prove it? Let us agree, therefore, if you please, that you should not charge us with the guilt of the wicked men whom you consider to belong to us, and that we should abstain from similar charges against you. So you will see, by this just agreement, confirmed and ratified, that you have no charge which you can bring against the seed of Abraham, as found in all the nations of the earth. But I find without difficulty a grievous charge to bring against you: Why have you impiously separated yourselves from the seed of Abraham, which is in all nations of the earth? Against this charge you certainly have no means whereby you may defend yourselves. For we each of us clear ourselves of the sins of other men; but this, that you do not hold communion with all the nations of the earth, which are blessed in the seed of Abraham, is a very grievous crime, of which not some but all of you are guilty.
74. And yet you know, as you prove by your quotation, that the Holy Spirit descended in such wise, that those who were then filled with it spoke with various tongues: what was the meaning of that sign and prodigy? Why then is the Holy Spirit given now in such wise, that no one to whom it is given speaks with various tongues, except because that miracle then prefigured that all nations of the earth should believe, and that thus the gospel should be found to be in every tongue? Just as it was foretold in the psalm so long before: "There is no speech nor language where their voice is not heard." This was said with reference to those men who were destined, after receiving the Holy Spirit, to speak with every kind of tongue. But because this passage itself signified that the gospel should be found hereafter in all nations and languages, and that the body of Christ should sound forth throughout all the world in every tongue, therefore he goes on to say, "Their sound is gone out throughout all the earth, and their words to the ends of the world." Hence it is that the true Church is hidden from no one. And hence comes that which the Lord Himself says in the gospel, "A city that is set on a hill cannot be hid." And therefore David continues in the same psalm, "In the sun has He placed His tabernacle," that is, in the open light of day; as we read in the Book of Kings, "For you did it secretly; but I will do this thing before all Israel, and before the sun." And He Himself is "as a bridegroom coming out of His chamber, and rejoices as a giant to run His race. His going forth is from the end of heaven:" here you have the coming of the Lord in the flesh. "And His circuit unto the ends of it:" here you have His resurrection and ascension. "And there is nothing hid from the heat thereof:" here you have the coming of the Holy Spirit, whom He sent in tongues of fire, that He might make manifest the glowing heat of charity, which he certainly cannot have who does not keep the unity of the Spirit in the bond of peace with the Church, which is throughout all languages.
Source: Answer to Letters of Petilian, Bishop of Cirta (New Advent)