Mark 1:4

John the Baptist came preaching in the wilderness the baptism of repentance unto the remission of sins.

Luke 1:77

to give knowledge of salvation to His people in remission of their sins,

Matthew 3:1-2

In those days comes John the Baptist, preaching in the wilderness of Judea,

Matthew 3:6

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

Matthew 3:11

I indeed baptize you with water unto repentance, but there is One coming after me more powerful than I, whose sandals I am not worthy to carry; He will baptize you with the Holy Ghost and fire.

Luke 3:2-3

and Caiaphas, the word of God came to John the son of Zacharias in the wilderness.

John 3:23

And John was also baptizing in Enon near Salim, because there were many waters there: and they came and baptized.

Acts 10:37

This word you know, which was throughout all Judea, beginning from Galilee, after the baptism which John preached;

Acts 13:24-25

and John having preached the baptism of repentance to all the people of Israel, before the face of his coming.

Acts 19:3-4

And he said, Into what then were you baptized? And they said, Into the baptism of John.

Acts 22:16

And now why tarriest thou? arising, be baptized, and wash away thy sins, calling on His name.

Treasury of Scripture Knowledge

Summary

John did baptize in the wilderness, and preach the baptism of repentance for the remission of sins.

Remission

Bible References

Did

Matthew 3:1
In those days comes John the Baptist, preaching in the wilderness of Judea,
Luke 3:2
and Caiaphas, the word of God came to John the son of Zacharias in the wilderness.
John 3:23
And John was also baptizing in Enon near Salim, because there were many waters there: and they came and baptized.
Acts 10:37
This word you know, which was throughout all Judea, beginning from Galilee, after the baptism which John preached;
Acts 13:24
and John having preached the baptism of repentance to all the people of Israel, before the face of his coming.
Acts 19:3
And he said, Into what then were you baptized? And they said, Into the baptism of John.

Remission

Acts 22:16
And now why tarriest thou? arising, be baptized, and wash away thy sins, calling on His name.