Charles Spurgeon Commentary John 1:23-37

"He said, I am the voice of one crying in the wilderness, Make straight the way of the Lord, as said Isaiah the prophet. And they had been sent from the Pharisees. And they asked him, and said unto him, Why then baptizest thou, if thou art not the Christ, neither Elijah, neither the prophet? John answered them, saying, I baptize in water: in the midst of you standeth one whom ye know not, [even] he that cometh after me, the latchet of whose shoe I am not worthy to unloose. These things were done in Bethany beyond the Jordan, where John was baptizing. On the morrow he seeth Jesus coming unto him, and saith, Behold, the Lamb of God, that taketh away the sin of the world! This is he of whom I said, After me cometh a man who is become before me: for he was before me. And I knew him not; but that he should be made manifest to Israel, for this cause came I baptizing in water. And John bare witness, saying, I have beheld the Spirit descending as a dove out of heaven; and it abode upon him. And I knew him not: but he that sent me to baptize in water, he said unto me, Upon whomsoever thou shalt see the Spirit descending, and abiding upon him, the same is he that baptizeth in the Holy Spirit. And I have seen, and have borne witness that this is the Son of God. Again on the morrow John was standing, and two of his disciples; and he looked upon Jesus as he walked, and saith, Behold, the Lamb of God! And the two disciples heard him speak, and they followed Jesus." — John 1:23-37 (ASV)

Of one crying in the wilderness, Make straight the way of the Lord, as said the prophet Esaias. And they which were sent were of the Pharisees. And they asked him, and said unto him, Why baptizest thou then, if thou be not that Christ, nor Elias, neither that prophet? John answered them, saying, I baptize with water: but there standeth one among you, whom ye know not; he it is, who coming after me is preferred before me, whose shoe's latchet I am not worthy to unloose. These things were done in Bethabara beyond Jordan, where John was baptizing. The next day John seeth Jesus coming unto him, and saith, Behold the lamb of God, which taketh away the sin of the world. This is he of whom I said, After me cometh a man which is preferred before me: for he was before me.

And I knew him not: but that he should be made manifest to Israel therefore am I come baptizing with water. And John bare record, saying, I saw the Spirit descending from heaven like a dove, and it abode upon him. And I knew him not: but he that sent me to baptize with water, the same said unto me, Upon whom thou shalt see the Spirit descending, and remaining on him, the same is he which baptizeth with the Holy Ghost. And I saw, and bare record that this is the Son of God. Again the next day after John stood, and two of his disciples, and looking upon Jesus as he walked, he saith, Behold the lamb of God! And the two disciples heard him speak, and they followed Jesus.

In the third chapter of the same Gospel, we have yet another testimony by John the Baptist concerning Christ.