stylistic:tone, linguistic:paraphrasing
In the Gospel of John

The fourth gospel describes John the Baptist as "a man sent from God" who "was not the light", but "came as a witness, to bear witness to the light, so that through him everyone might believe". John confirms that he is not the Christ nor Elijah nor 'the prophet' when asked by Jewish priests and Pharisees; instead, he described himself as the "voice of one crying in the wilderness".

Upon literary analysis, it is clear that John is the "testifier and confessor par excellence ", particularly when compared to figures like Nicodemus.

Jesus's baptism is implied but not depicted. Unlike the other gospels, it is John himself who testifies to seeing "the Spirit come down from heaven like a dove and rest on him". John explicitly announces that Jesus is the one "who baptizes with the Holy Spirit" and John even professes a "belief that he is the Son of God" and "the Lamb of God".

The Gospel of John reports that Jesus' disciples were baptizing and that a debate broke out between some of the disciples of John and another Jew about purification. In this debate John argued that Jesus "must become greater," while he (John) "must become less."

The Gospel of John then points out that Jesus' disciples were baptizing more people than John. Later, the Gospel relates that Jesus regarded John as "a burning and shining lamp, and you were willing to rejoice for a while in his light".