Bede : John baptized with the baptism of repentance. This baptism, he says, could not grant the remission of sins but could teach only repentance. For just as the sign of circumcision was a seal of the faith which they carried in the patriarchs, so this washing was accepted by the repentant people as a singular sign of their devotion: Yet this same thing was figuratively showing also the baptism of Christ, by which remission would be granted. — Commentary on Acts Oecumenius : From John's baptism he prophesies, and he leads them to understand that this was John's baptism. From this point it is shown that John's baptism was incomplete. For he did not say that it was forgiveness, but that it was of repentance. [AMMONIUS] — Commentary on Acts Tertullian : John's baptism had already raised the question, which our Lord himself posed for the Pharisees, whether it was something heavenly or just from earth. They, clearly not understanding because of their unbelief, could not come to a definite answer. We, however, having only a slight understanding that accords with our slight faith, can still judge that John's baptism was, on the one hand, divine in that God commanded it, but on the other, it was not divine in its power. We read that John had been sent by the Lord for this purpose, which was still human in nature, for he, established as a preacher of repentance, which is a question of a person's will, was offering nothing heavenly but was making way for the heavenly. Therefore, the scribes and the Pharisees who were unwilling to believe were also unwilling to undergo repentance. But if repentance is something human, then it must be that the baptism was of the very same nature, for had it been heavenly it would have given both the Holy Spirit and remission from sins. But no one forgives sins or grants the Holy Spirit but God alone. Besides, the Lord himself said that the Spirit would otherwise not descend unless he first should ascend to the Father. And so what the master would not yet give, the slave would surely not be able to offer. And again, later, in the Acts of the Apostles we find that those who had received John's baptism had not received the Holy Spirit of whom they had never even been told. Therefoe, it was not of heaven because it offered nothing heavenly. — ON BAPTISM 10.1-5 Tertullian : " And so "the baptism of repentance" was dealt with as if it were a candidate for the remission and sanctification shortly about to follow in Christ: for in that John used to preach "baptism for the remission of sins," the declaration was made with reference to future remission; if it be true, (as it is, ) that repentance is antecedent, remission subsequent; and this is "preparing the way. — On Baptism