-- prepare the way of the Lord, make straight a highway for God --- Isaiah 40:3
-- John saw many of the Pharisees and Sadducees come to his baptism --- Matthew 3:7
-- John said, who hath warned you to flee from the wrath to come --- Matthew 3:7
-- I indeed baptize you with water unto repentance --- Matthew 3:11
-- Jesus from Galilee to Jordan unto John, to be baptized of him --- Matthew 3:13
-- Jesus, when he was baptized, went up straightway out of the water --- Matthew 3:16
-- The baptism of John, whence was it? from heaven, or of men --- Matthew 21:25
-- John did baptize in the wilderness, and preach the baptism of repentance for the remission of sins --- Mark 1:4
-- I indeed have baptized you with water: but he shall baptize you with the Holy Ghost --- Mark 1:8
-- Jesus came from Nazareth of Galilee, and was baptized of John in Jordan --- Mark 1:9
-- The baptism of John, was it from heaven, or of men? answer me --- Mark 11:30
-- John answered, saying unto them all, I indeed baptize you with water --- Luke 3:16
-- being baptized with the baptism of John --- Luke 7:29
-- The baptism of John, was it from heaven, or of men --- Luke 20:4
-- John answered them, saying, I baptize with water --- John 1:26
-- I knew him not: but he that sent me to baptize with water --- John 1:33
-- John also was baptizing in Aenon near to Salim --- John 3:23
-- went away again beyond Jordan into the place where John at first baptized --- John 10:40
-- John truly baptized with water --- Acts 1:5
-- Beginning from the baptism of John, unto that same day that he was taken up --- Acts 1:22
-- after the baptism which John preached --- Acts 10:37
-- John indeed baptized with water --- Acts 11:16
-- John had first preached before his coming the baptism of repentance --- Acts 13:24
-- knowing only the baptism of John --- Acts 18:25
-- Unto what then were ye baptized? And they said, Unto John's baptism --- Acts 19:3
-- Then said Paul, John verily baptized with the baptism of repentance --- Acts 19:4

Isaiah 40:3 KJV
[3] The voice of him that crieth in the wilderness, Prepare ye the way of the Lord, make straight in the desert a highway for our God.

Matthew 3:7 KJV
[7] But when he saw many of the Pharisees and Sadducees come to his baptism, he said unto them, O generation of vipers, who hath warned you to flee from the wrath to come?

Matthew 3:11 KJV
[11] I indeed baptize you with water unto repentance: but he that cometh after me is mightier than I, whose shoes I am not worthy to bear: he shall baptize you with the Holy Ghost, and with fire:

Matthew 3:13-14 KJV
[13] Then cometh Jesus from Galilee to Jordan unto John, to be baptized of him. [14] But John forbad him, saying, I have need to be baptized of thee, and comest thou to me?

Matthew 3:16-17 KJV
[16] And Jesus, when he was baptized, went up straightway out of the water: and, lo, the heavens were opened unto him, and he saw the Spirit of God descending like a dove, and lighting upon him: [17] And lo a voice from heaven, saying, This is my beloved Son, in whom I am well pleased.

Matthew 21:25 KJV
[25] The baptism of John, whence was it? from heaven, or of men? And they reasoned with themselves, saying, If we shall say, From heaven; he will say unto us, Why did ye not then believe him?

Mark 1:4 KJV
[4] John did baptize in the wilderness, and preach the baptism of repentance for the remission of sins.

Mark 1:8 KJV
[8] I indeed have baptized you with water: but he shall baptize you with the Holy Ghost.

Mark 1:9 KJV
[9] And it came to pass in those days, that Jesus came from Nazareth of Galilee, and was baptized of John in Jordan.

Mark 11:30 KJV
[30] The baptism of John, was it from heaven, or of men? answer me.

Luke 3:16 KJV
[16] John answered, saying unto them all, I indeed baptize you with water; but one mightier than I cometh, the latchet of whose shoes I am not worthy to unloose: he shall baptize you with the Holy Ghost and with fire:

Luke 7:29 KJV
[29] And all the people that heard him, and the publicans, justified God, being baptized with the baptism of John.

Luke 20:4 KJV
[4] The baptism of John, was it from heaven, or of men?

John 1:26 KJV
[26] John answered them, saying, I baptize with water: but there standeth one among you, whom ye know not;

John 1:33 KJV
[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.

John 3:23 KJV
[23] And John also was baptizing in Aenon near to Salim, because there was much water there: and they came, and were baptized.

John 3:26 KJV
[26] And they came unto John, and said unto him, Rabbi, he that was with thee beyond Jordan, to whom thou barest witness, behold, the same baptizeth, and all men come to him.

John 4:1-2 KJV
[1] When therefore the Lord knew how the Pharisees had heard that Jesus made and baptized more disciples than John, [2] (Though Jesus himself baptized not, but his disciples,)

John 10:40 KJV
[40] And went away again beyond Jordan into the place where John at first baptized; and there he abode.

Acts 1:5 KJV
[5] For John truly baptized with water; but ye shall be baptized with the Holy Ghost not many days hence.

Acts 1:22 KJV
[22] Beginning from the baptism of John, unto that same day that he was taken up from us, must one be ordained to be a witness with us of his resurrection.

Acts 10:37 KJV
[37] That word, I say, ye know, which was published throughout all Judaea, and began from Galilee, after the baptism which John preached;

Acts 11:16 KJV
[16] Then remembered I the word of the Lord, how that he said, John indeed baptized with water; but ye shall be baptized with the Holy Ghost.

Acts 13:24 KJV
[24] When John had first preached before his coming the baptism of repentance to all the people of Israel.

Acts 18:25 KJV
[25] This man was instructed in the way of the Lord; and being fervent in the spirit, he spake and taught diligently the things of the Lord, knowing only the baptism of John.

Acts 19:3-5 KJV
[3] And he said unto them, Unto what then were ye baptized? And they said, Unto John's baptism. [4] Then said Paul, John verily baptized with the baptism of repentance, saying unto the people, that they should believe on him which should come after him, that is, on Christ Jesus. [5] When they heard this, they were baptized in the name of the Lord Jesus.

John the Baptist prepared the way for Jesus.
Isaiah made his prophecy about six hundred years before John the Baptist lived.

Isaiah 40:3-8 KJV
[3] The voice of him that crieth in the wilderness, Prepare ye the way of the Lord, make straight in the desert a highway for our God. [4] Every valley shall be exalted, and every mountain and hill shall be made low: and the crooked shall be made straight, and the rough places plain: [5] And the glory of the Lord shall be revealed, and all flesh shall see it together: for the mouth of the Lord hath spoken it. [6] The voice said, Cry. And he said, What shall I cry? All flesh is grass, and all the goodliness thereof is as the flower of the field: [7] The grass withereth, the flower fadeth: because the spirit of the Lord bloweth upon it: surely the people is grass. [8] The grass withereth, the flower fadeth: but the word of our God shall stand for ever.

Matthew 3:3 KJV
[3] For this is he that was spoken of by the prophet Esaias (Isaiah), saying, The voice of one crying in the wilderness, Prepare ye the way of the Lord, make his paths straight.

The word of God is still standing, even after all the attacks of Satan to try and delete it.