Mark 1:4

John was immersing in the desert, and proclaiming the immersion of repentance for 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 these days John the Baptist is present, proclaiming in the desert of Judea;

Matthew 3:6

And they were immersed in Jordan by him, acknowledging their sins.

Matthew 3:11

I truly immerse you in water to repentance; but he coming after me is stronger than I, whose shoes I am not fit to lift up; he shall immerse in the Holy Spirit, and fire

Luke 3:2-3

Upon Annas and Caiaphas being chief priests, the word of And was upon John, son of Zacharias in the desert.

John 3:23

And John was also immersing in AEnon near Salim, for many waters were there: and they came near and were immersed.

Acts 10:37

The word ye know, having been through the whole of Judea, having begun from Galilee, after the immersion which John preached;

Acts 13:24-25

John having proclaimed before the face of his coming the immersion of repentance to all the people of 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 art thou about to do having risen, be immersed and wash away thy sins, having called upon 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
In these days John the Baptist is present, proclaiming in the desert of Judea;
Luke 3:2
Upon Annas and Caiaphas being chief priests, the word of And was upon John, son of Zacharias in the desert.
John 3:23
And John was also immersing in AEnon near Salim, for many waters were there: and they came near and were immersed.
Acts 10:37
The word ye know, having been through the whole of Judea, having begun from Galilee, after the immersion which John preached;
Acts 13:24
John having proclaimed before the face of his coming the immersion of repentance to all the people of 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 art thou about to do having risen, be immersed and wash away thy sins, having called upon the name of the Lord.