MATTHEW says John knew before he baptized him. That is why John put up a fuss about the need for Jesus to be baptized.
3:13 Then cometh Jesus from Galilee to Jordan unto John, to be baptized of him. 3:14 But John forbad him, saying, I have need to be baptized of thee, and comest thou to me?
3:15 And Jesus answering said unto him, Suffer it to be so now: for thus it becometh us to fulfil all righteousness. Then he suffered him.
JOHN says John didn't know until he baptized him and the dove landed on him.
1:31 And I knew him not: but that he should be made manifest to Israel, therefore am I come baptizing with water.
1:32 And John bare record, saying, I saw the Spirit descending from heaven like a dove, and it abode upon him.
1:33 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.
1:34 And I saw, and bare record that this is the Son of God.
3:13 Then cometh Jesus from Galilee to Jordan unto John, to be baptized of him. 3:14 But John forbad him, saying, I have need to be baptized of thee, and comest thou to me?
3:15 And Jesus answering said unto him, Suffer it to be so now: for thus it becometh us to fulfil all righteousness. Then he suffered him.
JOHN says John didn't know until he baptized him and the dove landed on him.
1:31 And I knew him not: but that he should be made manifest to Israel, therefore am I come baptizing with water.
1:32 And John bare record, saying, I saw the Spirit descending from heaven like a dove, and it abode upon him.
1:33 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.
1:34 And I saw, and bare record that this is the Son of God.
John was debating because he felt that Jesus needed to baptize him (whom baptizes whom, as I said before). But we all know the reason John had to Baptize Jesus, even though it didn't seem proper to John, nor did he feel worthy.
