1 John 1:9

If we confess our sins, faithful is he and righteous 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 himself in the light, we have communion with each other, 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 of his justice at this present time: that he might be just, though justifying him who is of the faith of Jesus.

1 Corinthians 6:11

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

Matthew 3:6

and were baptized by him in Jordan, on making confession of their sins.

Mark 1:5

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

Acts 19:18

And many of those who believed came, confessing and declaring their practices.

1 Corinthians 1:9

Faithful is God, by whom ye have been called into communion with his Son Jesus Christ our Lord.

Ephesians 5:26

that he might sanctify it, purifying it in the laver of water by the word,

1 Timothy 1:15

It is a faithful saying, and worthy of all acceptation, that Christ Jesus came into the world to save sinners, of whom I am the chief.

Hebrews 6:10

For God is not unjust, to forget your work and labour of love, which ye have demonstrated in his name, having ministered assistance to the saints, and still ministering.

Hebrews 10:23

let us hold fast the profession of hope unwavering, (for he who promises is faithful.)

Hebrews 11:11

By faith also that very Sarah, who was barren, received ability for the conception of seed, and past the usual time of life brought forth a child, because she accounted that he who promised it, would be true to his promise.

Revelation 15:3

And they sung the sacred ode of Moses the servant of the Lord, and the song of the Lamb, saying, Great and marvellous are thy works, O Lord God Almighty; righteous and true are thy ways, O King of saints.

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 were baptized by him in Jordan, on making confession of their sins.
Mark 1:5
And all the country of Judea went out to him, and they of Jerusalem, and were all baptised by him in the river Jordan, confessing their sins.
Acts 19:18
And many of those who believed came, confessing and declaring their practices.

He is

1 Corinthians 1:9
Faithful is God, by whom ye have been called into communion with his Son Jesus Christ our Lord.
1 Timothy 1:15
It is a faithful saying, and worthy of all acceptation, that Christ Jesus came into the world to save sinners, of whom I am the chief.
Hebrews 10:23
let us hold fast the profession of hope unwavering, (for he who promises is faithful.)
Hebrews 11:11
By faith also that very Sarah, who was barren, received ability for the conception of seed, and past the usual time of life brought forth a child, because she accounted that he who promised it, would be true to his promise.

Just

Romans 3:26
for a demonstration of his justice at this present time: that he might be just, though justifying him who is of the faith of Jesus.
Hebrews 6:10
For God is not unjust, to forget your work and labour of love, which ye have demonstrated in his name, having ministered assistance to the saints, and still ministering.
Revelation 15:3
And they sung the sacred ode of Moses the servant of the Lord, and the song of the Lamb, saying, Great and marvellous are thy works, O Lord God Almighty; righteous and true are thy ways, O King of saints.

And to

1 John 1:7
but if we walk in the light, as he is himself in the light, we have communion with each other, and the blood of Jesus Christ his Son cleanseth us from all sin.
1 Corinthians 6:11
Yet such were some of you: but ye have been washed, but ye have been sanctified, but ye have been justified in the name of the Lord Jesus, and by the spirit of our God.
Ephesians 5:26
that he might sanctify it, purifying it in the laver 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
For if we thoroughly judged ourselves, we should not be judged of the Lord.
Hebrews 8:12
For I will be placable to their unrighteousnesses and their sins, and their iniquities I will never more remember."