Chapter 32.
75 Next, however, with regard to your statement that there is indeed one baptism, but that it is consecrated in three several grades, and to your having distributed the three forms of it to three persons after such fashion, that you ascribe the water to John, the Holy Spirit to the Lord Jesus Christ, and, in the third place, the fire to the Comforter sent down from above—consider for a moment in how great an error you are involved. For you were brought to entertain such an opinion simply from the words of John: "I indeed baptize you with water: but He that comes after me is mightier than I: He shall baptize you with the Holy Ghost, and with fire." Nor were you willing to take into consideration that the three things are not attributed to three persons taken one by one—water to John, the Holy Spirit to Christ, fire to the Comforter,— but that the three should rather be referred to two persons— one of them to John, the other two to our Lord. For neither is it said, I indeed baptize you with water: 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 the Comforter, who is to come after Him, He shall baptize you with fire; but "I indeed," He says, "with water: but He that comes after me with the Holy Ghost, and with fire." One he attributes to himself, two to Him that comes after him. You see, therefore, how you have been deceived in the number. Listen further. You said that there was one baptism consecrated in three stages— water, the Holy Spirit, and fire; and you assigned three persons to the three stages severally— John to the water, Christ to the Spirit, the Comforter to the fire. If, therefore, the water of John bears reference to the same baptism which is commended as being one, it was not right that those should have been baptized a second time by the command of the Apostle Paul whom he found to have been baptized by John. For they already had water, belonging, as you say, to the same baptism; so that it remained that they should receive the Holy Spirit and fire, because these were wanting in the baptism of John, that their baptism might be completed, being consecrated, as you assert, in three stages. But since they were ordered to be baptized by the authority of an apostle, it is sufficiently made manifest that that water with which John baptized had no reference to the baptism of Christ, but belonged to another dispensation suited to the exigencies of the times.
76. Lastly, when you wished to prove that the Holy Spirit was given by Christ, and had brought forward as a proof from the gospel, that Jesus on rising from the dead breathed into the face of His disciples, saying, "Receive the Holy Ghost;" and when you wished to prove that that last fire which was named in connection with baptism was found in the tongues of fire which were displayed on the coming of the Holy Ghost, how came it into your head to say, "And the Comforter Himself came upon the apostles as a fire burning with rustling flames," as though there were one Holy Spirit whom He gave by breathing on the face of His disciples, and another who, after His ascension, came on the apostles? Are we to suppose, therefore, that there are two Holy Spirits? Who will be found so utterly mad as to assert this? Christ therefore Himself gave the same Holy Spirit, whether by breathing on the face of the disciples, or by sending Him down from heaven on the day of Pentecost, with undoubted commendation of His holy sacrament. Accordingly it was not that Christ gave the Holy Spirit, and the Comforter gave the fire, that the saying might be fulfilled, "With the Holy Spirit, and with fire;" but the same Christ Himself gave the Holy Spirit in both cases, making it manifest while He was yet on earth by His breathing, and when He was ascended into heaven by the tongues of flame. For that you may know that the words of John, "He shall baptize you with the Holy Ghost," were not fulfilled at the time when He breathed on His disciples face, so that they should require to be baptized, when the Comforter should come, not with the Spirit any longer, but with fire, I would have you remember the most outspoken words of Scripture, and see what the Lord Himself said to them when He ascended into heaven: "John truly baptized you with water; but you shall be baptized with the Holy Ghost, whom you shall receive not many days hence at Pentecost." What could be plainer than this testimony? But according to your interpretation, what He should have said was this: John verily baptized you with water; but you were baptized with the Holy Spirit when I breathed on your faces; and next in due order shall you be baptized with fire, which you shall receive not many days hence—in order that by this means the three stages should be completed, in which you say that the one baptism was consecrated. And so it proves to be the case that you are still ignorant of the meaning of the words, "He shall baptize you with the Holy Ghost, and with fire;" and you are rash enough to be williing to teach what you do not know yourselves.
Source: Answer to Letters of Petilian, Bishop of Cirta (New Advent)