John 1:31

I myself did not recognize him; I only came baptizing in water, in order that he might be openly shown to Israel."

Luke 1:17

"He shall go before Him in the wisdom and power of Elijah to turn the hearts of the fathers to their children and the disobedient to the wisdom of the righteous, and so to make ready for the Lord a people prepared for him."

Matthew 3:6

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

Mark 1:3-5

The voice of one crying aloud. In the desert make ready a road for the Lord. Make his paths straight.

Luke 1:76-80

"And thou, child, shalt be called the Prophet of the Most High, For thou shalt go before the Lord to prepare the way

Luke 2:39-42

As soon as all that the law required had been done, they returned to Galilee to their own town, Nazareth.

Luke 3:3-4

And John went into all the region about the Jordan, preaching a baptism of repentance for the remission of sins.

John 1:7

He came as a witness, that he might bear testimony concerning the Light??o that all men might believe through him.

John 1:33

And I did not recognize him, but He who sent me to baptize in water said to me, 'The one on whom you see the Spirit descending and resting upon him, is he who baptizes in the Holy Spirit.'

Acts 19:4

"John indeed baptized with the baptism of repentance," answered Paul, "telling the people to believe on One who was coming after him, namely, on 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
And I did not recognize him, but He who sent me to baptize in water said to me, 'The one on whom you see the Spirit descending and resting upon him, is he who baptizes in the Holy Spirit.'
Luke 1:80
And the child grew, and became strong in the Spirit, and remained in the desert till the day of his showing to Israel.
Luke 2:39
As soon as all that the law required had been done, they returned to Galilee to their own town, Nazareth.

But

John 1:7
He came as a witness, that he might bear testimony concerning the Light??o that all men might believe through him.
Luke 1:17
"He shall go before Him in the wisdom and power of Elijah to turn the hearts of the fathers to their children and the disobedient to the wisdom of the righteous, and so to make ready for the Lord a people prepared for him."

Therefore

Matthew 3:6
and were baptized by him in the river Jordan, confessing their sins.
Mark 1:3
The voice of one crying aloud. In the desert make ready a road for the Lord. Make his paths straight.
Luke 3:3
And John went into all the region about the Jordan, preaching a baptism of repentance for the remission of sins.
Acts 19:4
"John indeed baptized with the baptism of repentance," answered Paul, "telling the people to believe on One who was coming after him, namely, on Jesus."