Acts 19:18

Many who became believers would come and openly confess their former practices.

Matthew 3:6

and they were baptized by him in the Jordan River, in acknowledgment of their sins.

Romans 10:10

For with their minds men believe and are made upright, and with their lips they make the acknowledgment and are saved.

1 John 1:9

If we acknowledge our sins, he is upright and can be depended on to forgive our sins and cleanse us from everything wrong.

Treasury of Scripture Knowledge

Summary

And many that believed came, and confessed, and shewed their deeds.

Bible References

Confessed

Matthew 3:6
and they were baptized by him in the Jordan River, in acknowledgment of their sins.
Romans 10:10
For with their minds men believe and are made upright, and with their lips they make the acknowledgment and are saved.
1 John 1:9
If we acknowledge our sins, he is upright and can be depended on to forgive our sins and cleanse us from everything wrong.