Luke 3:3

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

Luke 1:77

to give knowledge of salvation to his people in the forgiveness of their sins,

Matthew 3:5-6

Then Jerusalem and all Judea and all the region about the Jordan were going out to him,

Matthew 3:11

"I baptize you with water for repentance, but he who is coming after me is mightier than I, whose sandals I am not worthy to carry. He will baptize you with the Holy Spirit and fire.

Mark 1:4-5

John appeared, baptizing in the wilderness and proclaiming a baptism of repentance for the forgiveness of sins.

John 1:28

These things took place in Bethany across the Jordan, where John was baptizing.

John 1:31-33

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

John 3:26

And they came to John and said to him, "Rabbi, he who was with you across the Jordan, to whom you bore witness--look, he is baptizing, and all are going to him."

Acts 13:24

Before his coming, John had proclaimed a baptism of repentance to all the people of Israel.

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."

Acts 22:16

And now why do you wait? Rise and be baptized and wash away your sins, calling on his name.'

Treasury of Scripture Knowledge

Summary

And he came into all the country about Jordan, preaching the baptism of repentance for the remission of sins;

For

Bible References

The country

Matthew 3:5
Then Jerusalem and all Judea and all the region about the Jordan were going out to him,
Mark 1:4
John appeared, baptizing in the wilderness and proclaiming a baptism of repentance for the forgiveness of sins.
John 1:28
These things took place in Bethany across the Jordan, where John was baptizing.
John 3:26
And they came to John and said to him, "Rabbi, he who was with you across the Jordan, to whom you bore witness--look, he is baptizing, and all are going to him."

Preaching

Matthew 3:6
and they were baptized by him in the river Jordan, confessing their sins.
Mark 1:4
John appeared, baptizing in the wilderness and proclaiming a baptism of repentance for the forgiveness of sins.
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."
Acts 13:24
Before his coming, John had proclaimed a baptism of repentance to all the people of Israel.
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."
Acts 22:16
And now why do you wait? Rise and be baptized and wash away your sins, calling on his name.'

For

Luke 1:77
to give knowledge of salvation to his people in the forgiveness of their sins,

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