John 1:27 "It is He who, coming after me, is preferred before me, whose sandal strap I am not worthy to loose." 28 These things were done in Bethabara beyond the Jordan, where John was baptizing. 29 The next day John saw Jesus coming toward him, and said, "Behold! The Lamb of God who takes away the sin of the world! 30 "This is He of whom I said, 'After me comes a Man who is preferred before me, for He was before me.'"
In this tremendous passage of scripture we see John the Baptist still saying he is nothing compared to Jesus. He tells us that before he talks about Jesus and then again after he points us to the Lamb of God. He will tell us about that glorious Lamb that takes away the sin of the world and was predicted all the way back in Genesis 3:15, and spoken of so many times in the Old Testament sacrifices. He tells us that Jesus is the only one who can take away our sin and provide salvation.
John 1:19 Now this is the testimony of John, when the Jews sent priests and Levites from Jerusalem to ask him, "Who are you?" 20 He confessed, and did not deny, but confessed, "I am not the Christ." 21 And they asked him, "What then? Are you Elijah?" He said, "I am not." "Are you the Prophet?" And he answered, "No." 22 Then they said to him, "Who are you, that we may give an answer to those who sent us? What do you say about yourself?" 23 He said: "I am 'The voice of one crying in the wilderness: "Make straight the way of the LORD,"' as the prophet Isaiah said." 24 Now those who were sent were from the Pharisees. 25 And they asked him, saying, "Why then do you baptize if you are not the Christ, nor Elijah, nor the Prophet?" 26 John answered them, saying, "I baptize with water, but there stands One among you whom you do not know.
We’ve seen the testimony of John about Christ, now we see the powers that be asking John who he is and why he is doing all the things he is doing, especially baptizing. They are worried about who he is and why he has come and why so many people are flocking to him out in the desert. John will not even speak about who he is but does what he always does, his job, which is to point others to Jesus. The ones who are sent go away without the answer of who he is, but heard something much more important that they do not even listen to or care about. How sad for them.
John 1:15 John bore witness of Him and cried out, saying, "This was He of whom I said, 'He who comes after me is preferred before me, for He was before me.'" 16 And of His fullness we have all received, and grace for grace. 17 For the law was given through Moses, but grace and truth came through Jesus Christ. 18 No one has seen God at any time. The only begotten Son, who is in the bosom of the Father, He has declared Him.
In this section of scripture we see the use of courtroom terms giving us the legal witness of John the Baptist about Jesus and who He is. We see that John talks about Jesus being the preeminent one and that we see all of God in Him. That He gives Grace whereas Moses gave the law which could only condemn. Lastly we see that Jesus is the one who explains to us who the Father is.