John 1:7 states John's role as witness to the light — the same purpose of revealing Jesus that v31 says he came for.

John 1:33 reveals the specific sign (Spirit descending) by which John recognized Jesus, fulfilling the purpose stated in v31.

Isaiah 40:3-5 prophesies a voice preparing the way — John's mission to reveal Jesus fulfills this preparation.

Malachi 3:1 foretells a messenger preparing the way before the Lord — John's revealing of Jesus directly fulfills this.

Mark 1:3-5 links John's baptism to Isaiah's preparation prophecy — the same mission of revealing Christ in John 1:31.

Luke 1:17 gives John's commission to prepare the Lord's way — the same purpose John states in John 1:31 for baptizing to reveal Jesus.

Luke 1:76-79 details John's role to give knowledge of salvation, echoing John 1:31's purpose of revealing Jesus through baptism.

Luke 1:80 describes John's growth and wilderness life before his public appearance to Israel — the context for his revealing mission.

Luke 3:4 quotes Isaiah's prophecy of preparing the way — the scriptural basis for John's mission to reveal Jesus in John 1:31.

Acts 19:4 explicitly says John's baptism pointed to Jesus — the same revealing purpose John states in John 1:31.

Matthew 3:16 shows the Spirit descending at Jesus' baptism — the revelation John's water baptism in John 1:31 was meant to bring.

Mark 1:10 describes the Spirit descending at Jesus' baptism — the revelation John's baptism in John 1:31 was intended to achieve.

Malachi 4:2 prophesies the 'sun of righteousness' coming with healing — the Messiah John is sent to reveal.

Acts 1:5 contrasts John's water baptism with Spirit baptism — the same water baptism John mentions in John 1:31 as revealing Jesus.