And they asked him (put the question), and said to him, Why baptizest thou, then, if thou be not£ the Christ, not Elijah, not the prophet? It would seem that, judging from such expressions as Ezekiel 36:25, Ezekiel 36:26 and Zechariah 13:1, the Jews expected some renewal of ceremonial purification on a grand scale at the Messianic appearance, and John's repudiation of every personal rank, which could, according to their view, justify him called for some explanation.
The answer is not very explicit. John answered them and said, I baptize with water; not as Messiah, or Elijah, or a resuscitated prophet, not as making proselytes to the faith of Abraham's sons, not as an Essene admitting the children of the kingdom to a close spiritual corporation, but because the Messiah has come. Some have laid great emphasis on the limitation which John assigns to his baptism. It is said he thus anticipated the contrast afterwards expressed between it and the Spirit baptism of Jesus. This is. however, reserved for a later utterance. The baptism with water inaugurated the Messianic kingdom, prepared the people to receive the Lord. If, then, Messiah were reasonably expected thus to create a fellowship of those, who, substituted this simple lustration for a cumbrous cycle of ceremonial purifications, John, as the "voice," the "herald," the "crier" in the wilderness, was justified in administering the rite. I baptize with water, seeing that there standeth £ in the midst of you £ one (whom you know not) who is coming after me, whose shoe's latchet I am not worthy to loose. This standing in the very crowd before him of the Mightier than John, now being searched out as it were by the glances of the Baptist, and recognized by him as One over whom the heavens had opened, gave ample support to the Baptist in his baptismal functions. The One coming after John, i.e. "after," because of John's chronological precedence in showing himself to Israel, is yet of such lofty rank and mighty power that John is not fit in his own opinion to be his humblest slave. This solemn assurance justifies to the Sanhedrin the preparatory rite. This closes the first great testimony. Before proceeding to the second, the evangelist supplies a geographical hint, which up to the present day has not been satisfactorily interpreted.