19 This was John's testimony when the Jewish leaders sent priests and Temple assistants from Jerusalem to ask John, "Who are you?" 20 He came right out and said, "I am not the Messiah." 21 "Well then, who are you?" they asked. "Are you Elijah?" "No," he replied. "Are you the Prophet we are expecting?" "No." 22 "Then who are you? We need an answer for those who sent us. What do you have to say about yourself?" 23 John replied in the words of the prophet Isaiah: "I am a voice shouting in the wilderness, 'Clear the way for the Lord 's coming!'" 24 Then the Pharisees who had been sent 25 asked him, "If you aren't the Messiah or Elijah or the Prophet, what right do you have to baptize?" 26 John told them, "I baptize with water, but right here in the crowd is someone you do not recognize. 27 Though his ministry follows mine, I'm not even worthy to be his slave and untie the straps of his sandal." 28 This encounter took place in Bethany, an area east of the Jordan River, where John was baptizing.
29 The next day John saw Jesus coming toward him and said, "Look! The Lamb of God who takes away the sin of the world! 30 He is the one I was talking about when I said, 'A man is coming after me who is far greater than I am, for he existed long before me.' 31 I did not recognize him as the Messiah, but I have been baptizing with water so that he might be revealed to Israel." 32 Then John testified, "I saw the Holy Spirit descending like a dove from heaven and resting upon him. 33 I didn't know he was the one, but when God sent me to baptize with water, he told me, 'The one on whom you see the Spirit descend and rest is the one who will baptize with the Holy Spirit.' 34 I saw this happen to Jesus, so I testify that he is the Chosen One of God. "
35 The following day John was again standing with two of his disciples. 36 As Jesus walked by, John looked at him and declared, "Look! There is the Lamb of God!"
Matthew Henry's Commentary on John 1:19-36
Commentary on John 1:19-28
(Read John 1:19-28)
John disowns himself to be the Christ, who was now expected and waited for. He came in the spirit and power of Elias, but he was not the person of Elias. John was not that Prophet whom Moses said the Lord would raise up to them of their brethren, like unto him. He was not such a prophet as they expected, who would rescue them from the Romans. He gave such an account of himself, as might excite and awaken them to hearken to him. He baptized the people with water as a profession of repentance, and as an outward sign of the spiritual blessings to be conferred on them by the Messiah, who was in the midst of them, though they knew him not, and to whom he was unworthy to render the meanest service.
Commentary on John 1:29-36
(Read John 1:29-36)
John saw Jesus coming to him, and pointed him out as the Lamb of God. The paschal lamb, in the shedding and sprinkling of its blood, the roasting and eating of its flesh, and all the other circumstances of the ordinance, represented the salvation of sinners by faith in Christ. And the lambs sacrificed every morning and evening, can only refer to Christ slain as a sacrifice to redeem us to God by his blood. John came as a preacher of repentance, yet he told his followers that they were to look for the pardon of their sins to Jesus only, and to his death. It agrees with God's glory to pardon all who depend on the atoning sacrifice of Christ. He takes away the sin of the world; purchases pardon for all that repent and believe the gospel. This encourages our faith; if Christ takes away the sin of the world, then why not my sin? He bore sin for us, and so bears it from us. God could have taken away sin, by taking away the sinner, as he took away the sin of the old world; but here is a way of doing away sin, yet sparing the sinner, by making his Son sin, that is, a sin-offering, for us. See Jesus taking away sin, and let that cause hatred of sin, and resolutions against it. Let us not hold that fast, which the Lamb of God came to take away. To confirm his testimony concerning Christ, John declares the appearance at his baptism, in which God himself bore witness to him. He saw and bare record that he is the Son of God. This is the end and object of John's testimony, that Jesus was the promised Messiah. John took every opportunity that offered to lead people to Christ.