1 John 1:9

If we confess our sins, He is faithful and just to forgive us our sins, and to cleanse us from all unrighteousness:

1 John 1:7

but if we walk in the light, as He is in the light, we have communion with one another, and the blood of Jesus Christ his Son cleanseth us from all sin.

Titus 2:14

who gave Himself for us, that He might redeem us from all iniquity, and purify to Himself a peculiar people, zealous of good works.

Romans 3:26

for a demonstration, I say, of his righteousness at this time: that He might be just, and the justifier of him, that believeth in Jesus.

1 Corinthians 6:11

And such were some of you: but ye are washed, but ye are sanctified, but ye are justified in the name of the Lord Jesus, and by the spirit of our God.

Matthew 3:6

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

Mark 1:5

and all the country of Judea, and those of Jerusalem, went out to him, and were all baptized by him in the river Jordan, confessing their sins.

Acts 19:18

And many of them that believed came confessing and declaring their former practices.

1 Corinthians 1:9

for God is faithful by whom ye were called into the communion of his son Jesus Christ our Lord.

Ephesians 5:26

to sanctify and cleanse it with the washing of water by the word,

1 Timothy 1:15

It is a truth highly to be believed, and worthy to be received by all, that Christ Jesus came into the world to save sinners:---of whom I am one of the chief.

Hebrews 6:10

For God is not unjust to forget your work and labor of love, which ye have shewn to his name, by having ministred to the saints, and yet ministring.

Hebrews 10:23

Let us inflexibly retain the profession of our hope,

Hebrews 11:11

By faith also Sarah received strength to conceive seed, and brought forth a son when she was past age, because she accounted Him faithful who had promised.

Revelation 15:3

And they sing the song of Moses the servant of God, and the song of the Lamb, saying, "Great and marvellous are thy works, Lord God almighty; just and true are thy ways, O king of saints: who should not fear thee,

Treasury of Scripture Knowledge

Summary

If we confess our sins, he is faithful and just to forgive us our sins, and to cleanse us from all unrighteousness.

General references

Bible References

We confess

Matthew 3:6
and they were baptized by him in Jordan, confessing their sins.
Mark 1:5
and all the country of Judea, and those of Jerusalem, went out to him, and were all baptized by him in the river Jordan, confessing their sins.
Acts 19:18
And many of them that believed came confessing and declaring their former practices.

He is

1 Corinthians 1:9
for God is faithful by whom ye were called into the communion of his son Jesus Christ our Lord.
1 Timothy 1:15
It is a truth highly to be believed, and worthy to be received by all, that Christ Jesus came into the world to save sinners:---of whom I am one of the chief.
Hebrews 10:23
Let us inflexibly retain the profession of our hope,
Hebrews 11:11
By faith also Sarah received strength to conceive seed, and brought forth a son when she was past age, because she accounted Him faithful who had promised.

Just

Romans 3:26
for a demonstration, I say, of his righteousness at this time: that He might be just, and the justifier of him, that believeth in Jesus.
Hebrews 6:10
For God is not unjust to forget your work and labor of love, which ye have shewn to his name, by having ministred to the saints, and yet ministring.
Revelation 15:3
And they sing the song of Moses the servant of God, and the song of the Lamb, saying, "Great and marvellous are thy works, Lord God almighty; just and true are thy ways, O king of saints: who should not fear thee,

And to

1 John 1:7
but if we walk in the light, as He is in the light, we have communion with one another, and the blood of Jesus Christ his Son cleanseth us from all sin.
1 Corinthians 6:11
And such were some of you: but ye are washed, but ye are sanctified, but ye are justified in the name of the Lord Jesus, and by the spirit of our God.
Ephesians 5:26
to sanctify and cleanse it with the washing of water by the word,
Titus 2:14
who gave Himself for us, that He might redeem us from all iniquity, and purify to Himself a peculiar people, zealous of good works.

General references

1 Corinthians 11:31
If then we would judge ourselves, we should not be judged:
Hebrews 8:12
For I will forgive their crimes, and their sins and their iniquities I will remember no more."