John 1:31

I myself did not know him, but for this purpose I came baptizing with water, that he might be revealed to Israel."

Luke 1:17

and he will go before him in the spirit and power of Elijah, to turn the hearts of the fathers to the children, and the disobedient to the wisdom of the just, to make ready for the Lord a people prepared."

Isaiah 40:3-5

A voice cries: "In the wilderness prepare the way of the LORD; make straight in the desert a highway for our God.

Malachi 3:1

"Behold, I send my messenger, and he will prepare the way before me. And the Lord whom you seek will suddenly come to his temple; and the messenger of the covenant in whom you delight, behold, he is coming, says the LORD of hosts.

Malachi 4:2-5

But for you who fear my name, the sun of righteousness shall rise with healing in its wings. You shall go out leaping like calves from the stall.

Matthew 3:6

and they were baptized by him in the river Jordan, confessing their sins.

Mark 1:3-5

the voice of one crying in the wilderness: 'Prepare the way of the Lord, make his paths straight,'"

Luke 1:76-80

And you, child, will be called the prophet of the Most High; for you will go before the Lord to prepare his ways,

Luke 2:39-42

And when they had performed everything according to the Law of the Lord, they returned into Galilee, to their own town of Nazareth.

Luke 3:3-4

And he went into all the region around the Jordan, proclaiming a baptism of repentance for the forgiveness of sins.

John 1:7

He came as a witness, to bear witness about the light, that all might believe through him.

John 1:33

I myself did not know him, but he who sent me to baptize with water said to me, 'He on whom you see the Spirit descend and remain, this is he who baptizes with the Holy Spirit.'

Acts 19:4

And Paul said, "John baptized with the baptism of repentance, telling the people to believe in the one who was to come after him, that is, Jesus."

Treasury of Scripture Knowledge

Summary

And I knew him not: but that he should be made manifest to Israel, therefore am I come baptizing with water.

Bible References

I knew

John 1:33
I myself did not know him, but he who sent me to baptize with water said to me, 'He on whom you see the Spirit descend and remain, this is he who baptizes with the Holy Spirit.'
Luke 1:80
And the child grew and became strong in spirit, and he was in the wilderness until the day of his public appearance to Israel.
Luke 2:39
And when they had performed everything according to the Law of the Lord, they returned into Galilee, to their own town of Nazareth.

But

John 1:7
He came as a witness, to bear witness about the light, that all might believe through him.
Isaiah 40:3
A voice cries: "In the wilderness prepare the way of the LORD; make straight in the desert a highway for our God.
Malachi 3:1
"Behold, I send my messenger, and he will prepare the way before me. And the Lord whom you seek will suddenly come to his temple; and the messenger of the covenant in whom you delight, behold, he is coming, says the LORD of hosts.
Malachi 4:2
But for you who fear my name, the sun of righteousness shall rise with healing in its wings. You shall go out leaping like calves from the stall.
Luke 1:17
and he will go before him in the spirit and power of Elijah, to turn the hearts of the fathers to the children, and the disobedient to the wisdom of the just, to make ready for the Lord a people prepared."

Therefore

Matthew 3:6
and they were baptized by him in the river Jordan, confessing their sins.
Mark 1:3
the voice of one crying in the wilderness: 'Prepare the way of the Lord, make his paths straight,'"
Luke 3:3
And he went into all the region around the Jordan, proclaiming a baptism of repentance for the forgiveness of sins.
Acts 19:4
And Paul said, "John baptized with the baptism of repentance, telling the people to believe in the one who was to come after him, that is, Jesus."

The Holy Bible, English Standard Version® copyright © 2001 by Crossway Bibles, a publishing ministry of Good News Publishers.