Mark 1:4

It came to pass, that John was immersing in the wilderness and preaching an immersion of repentance for remission of sins.

Luke 1:77

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

Matthew 3:1-2

And in those days John the immerser comes, preaching in the wilderness of Judea, and saying,

Matthew 3:6

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

Matthew 3:11

I indeed immerse you in water for repentance, but he who comes after me is mightier than I, whose shoes I am not worthy to bear. He will immerse you in a Holy Spirit.

Luke 3:2-3

in the high priesthood of Annas and Caiaphas, the word of God became in John the son of Zacharias in the wilderness.

John 3:23

And John also was immersing in Aenon near Salim because there was much water there. And they came and were immersed.

Acts 10:37

ye know, the word having occurred throughout the whole of Judea beginning from Galilee after the immersion that John preached--

Acts 13:24-25

John having earlier proclaimed, before his coming presence, the immersion of repentance to Israel.

Acts 19:3-4

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

Acts 22:16

And now what is it going to be? Having arisen, immerse and wash away thy sins, calling on the name of the Lord.

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
And in those days John the immerser comes, preaching in the wilderness of Judea, and saying,
Luke 3:2
in the high priesthood of Annas and Caiaphas, the word of God became in John the son of Zacharias in the wilderness.
John 3:23
And John also was immersing in Aenon near Salim because there was much water there. And they came and were immersed.
Acts 10:37
ye know, the word having occurred throughout the whole of Judea beginning from Galilee after the immersion that John preached--
Acts 13:24
John having earlier proclaimed, before his coming presence, the immersion of repentance to Israel.
Acts 19:3
And he said to them, Into what then were ye immersed? And they said, Into John's immersion.

Remission

Acts 22:16
And now what is it going to be? Having arisen, immerse and wash away thy sins, calling on the name of the Lord.