John Lightfoot on John 3:25

[A question about purifying.] I. Question, Syriac, inquire: which calls to mind that which is so perpetually in use amongst the Talmudic authors; R. N. inquired of R. N. Whence that also, as familiarly used, If you ask I will tell you. If the word in this place be taken according to this scholastic use of it, as it may very well be, then we may expound this passage thus:

The disciples of John, having heard that Jesus did baptize also, they with the Jews inquire, what sort of purifying resulted from the baptism of Christ; whether that purified more than the baptism of John. They inquire jointly, Doth Jesus superinduce a baptism upon the baptism of John? and John his upon the baptisms or washing of the Jews? Whither will this purifying at last tend? and what virtue hath this of Jesus' beyond that of John's?

II. Or, if you will, suppose we that this be a dispute betwixt the disciples of St. John and the Jews about the legal purifications and the baptism now introduced: there is no doubt but both parties contended to the uttermost of their power.