Mark 1:4

John came, who was immersing in the wilderness, and preaching the immersion of repentance unto remission of sins.

Luke 1:77

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

Matthew 3:1-2

Now in those days comes John, the Immerser, preaching in the wilderness of Judaea,

Matthew 3:6

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

Matthew 3:11

"I, indeed, immerse you in water unto repentance, but He Who is coming after me is mightier than I, whose sandals I am not worthy to bear, He will immerse you in the Holy Spirit and fire;

Luke 3:2-3

in the high priesthood of Annas and Caiaphas, the word of God came to John, the son of Zacharias, in the wilderness;

John 3:23

And John also was immersing in Enon near Salim, because there was much water there; and they were coming and being immersed.

Acts 10:37

Ye know the word that came throughout all Judaea, after the immersion which John preached; even Jesus of Nazareth,

Acts 13:24-25

John having first preached, before His coming, the immersion of repentance to all the people of Israel.

Acts 19:3-4

And he said, "Into what, then, were ye immersed?" And they said, "Into John's immersion."

Acts 22:16

And now why do you delay? Arising, be immersed, and wash away your 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
Now in those days comes John, the Immerser, preaching in the wilderness of Judaea,
Luke 3:2
in the high priesthood of Annas and Caiaphas, the word of God came to John, the son of Zacharias, in the wilderness;
John 3:23
And John also was immersing in Enon near Salim, because there was much water there; and they were coming and being immersed.
Acts 10:37
Ye know the word that came throughout all Judaea, after the immersion which John preached; even Jesus of Nazareth,
Acts 13:24
John having first preached, before His coming, the immersion of repentance to all the people of Israel.
Acts 19:3
And he said, "Into what, then, were ye immersed?" And they said, "Into John's immersion."

Remission

Acts 22:16
And now why do you delay? Arising, be immersed, and wash away your sins, calling on His name.'