Acts 19:18

Many, too, of those who had become believers in Christ came with a full confession of their practices;

Matthew 3:6

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

Romans 10:10

For with their hearts men believe and so attain to righteousness, while with their lips they make their Profession of Faith and so find Salvation.

1 John 1:9

If we confess our sins, God may be trusted, in his righteousness, to forgive us our sins and purify us from all wickedness.

Treasury of Scripture Knowledge

Summary

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

Bible References

Confessed

Matthew 3:6
And were baptized by him in the river Jordan, confessing their sins.
Romans 10:10
For with their hearts men believe and so attain to righteousness, while with their lips they make their Profession of Faith and so find Salvation.
1 John 1:9
If we confess our sins, God may be trusted, in his righteousness, to forgive us our sins and purify us from all wickedness.