Paul [then] said, “John immersed people who [demonstrated their] repentance, telling them they must believe in Jesus, the One who would come after him.”
John gave testimony about Jesus, shouting out, ”This person is the one about whom I said, ‘He who will come after me ranks above me because He existed before me.’”
He came to be a witness, so that he might testify concerning that Light, so that all people would believe [in Jesus] through him [i.e., through his testimony. See Acts 19:4].
[Jesus then said,] “For John immersed you [men] in water but [this time] you will be immersed in the Holy Spirit, and [it will happen] in just a few more days.” [See Matt. 3:11].