1 John 1:7

but, if we walk in the light, as He is in the light, we have fellowship with One another, and the blood of Jesus His Son cleanses us from all sin.

Ephesians 1:7

in Whom we have our redemption through His blood, the forgiveness of our trespasses, according to the riches of His grace,

1 Timothy 6:16

Who only hath immortality, inhabiting light unapproachable, Whom no man ever saw or is able to see; to Whom be honor and dominion eternal. Amen.

Hebrews 9:14

how much more shall the blood of Christ, Who through the Eternal Spirit offered Himself without blemish to God, cleanse your conscience from dead works to serve the living God?

Revelation 1:5

and from Jesus Christ, the faithful Witness, the First-born of the dead, and the Ruler of the kings of the earth. To Him Who loveth, and loosed us from our sins in His own blood,

1 Peter 1:19

but with the precious blood of Christ, as of a lamb without blemish and without spot;

1 John 1:3

that which we have seen and heard we declare to you also, that ye also may have fellow-ship with us; and our fellowship also is with the Father, and with His Son Jesus Christ.

Revelation 7:14

And I have said to him, "My lord, you know." And he said to me, "These are those who come out of the great tribulation; and they washed their robes, and made them white in the blood of the Lamb.

John 1:29

On the morrow he sees Jesus coming to him, and he says, "Behold, the Lamb of God Who taketh away the sin of the world!

John 12:35

Jesus, therefore, said to them, "Yet a little while is the Light among you. Walk while ye have the Light, lest darkness overtake you; and he that walks in the darkness knows not where he is going.

Romans 13:12

The night was far spent, and the day has drawn near; let us, therefore, put off the works of darkness, and let us put on the armor of light.

1 Corinthians 6:11

And such were some of you; but ye were washed, but ye were sanctified, but ye were justified in the name of the Lord Jesus, and in the Spirit of our God.

Ephesians 5:8

for ye were once darkness, but now are ye light in the Lord; walk as children of light

James 1:17

Every good gift, and every perfect gift is from above, coming down from the Father of the lights, with Whom there is no variableness or shadow cast by turning.

1 John 1:5

And this is the message which we have heard from Him, and announce to you, that God is Light, and in Him there is no darkness at all.

1 John 2:1-2

My little children, these things I write to you, that ye may not sin. And, if any one sin, we have an Advocate with the Father, Jesus Christ, the Righteous.

1 John 2:9-10

He who says that he is in the light, and hates his brother, is in the darkness even until now.

1 John 5:6

This is He Who came through water and blood, Jesus Christ; not in the water only, but in the water and in the blood.

1 John 5:8

because there are Three Who bear witness; the Spirit, and the water, and the blood; and the Three agree in one.

2 John 1:4

I rejoiced exceedingly, because I have found some of your children walking in truth, even as we received commandment from the Father.

3 John 1:4

I have no greater joy than this, to hear of my children walking in the truth.

Revelation 12:11

and they overcame him because of the blood of the Lamb, and because of the word of their testimony, and they loved not their soul, even to death.

Treasury of Scripture Knowledge

Summary

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

General references

Bible References

If we

1 John 2:9
He who says that he is in the light, and hates his brother, is in the darkness even until now.
John 12:35
Jesus, therefore, said to them, "Yet a little while is the Light among you. Walk while ye have the Light, lest darkness overtake you; and he that walks in the darkness knows not where he is going.
Romans 13:12
The night was far spent, and the day has drawn near; let us, therefore, put off the works of darkness, and let us put on the armor of light.
Ephesians 5:8
for ye were once darkness, but now are ye light in the Lord; walk as children of light
2 John 1:4
I rejoiced exceedingly, because I have found some of your children walking in truth, even as we received commandment from the Father.
3 John 1:4
I have no greater joy than this, to hear of my children walking in the truth.

As

1 John 1:5
And this is the message which we have heard from Him, and announce to you, that God is Light, and in Him there is no darkness at all.
1 Timothy 6:16
Who only hath immortality, inhabiting light unapproachable, Whom no man ever saw or is able to see; to Whom be honor and dominion eternal. Amen.
James 1:17
Every good gift, and every perfect gift is from above, coming down from the Father of the lights, with Whom there is no variableness or shadow cast by turning.

And the

1 John 2:1
My little children, these things I write to you, that ye may not sin. And, if any one sin, we have an Advocate with the Father, Jesus Christ, the Righteous.
1 John 5:6
This is He Who came through water and blood, Jesus Christ; not in the water only, but in the water and in the blood.
John 1:29
On the morrow he sees Jesus coming to him, and he says, "Behold, the Lamb of God Who taketh away the sin of the world!
1 Corinthians 6:11
And such were some of you; but ye were washed, but ye were sanctified, but ye were justified in the name of the Lord Jesus, and in the Spirit of our God.
Ephesians 1:7
in Whom we have our redemption through His blood, the forgiveness of our trespasses, according to the riches of His grace,
Hebrews 9:14
how much more shall the blood of Christ, Who through the Eternal Spirit offered Himself without blemish to God, cleanse your conscience from dead works to serve the living God?
1 Peter 1:19
but with the precious blood of Christ, as of a lamb without blemish and without spot;
Revelation 1:5
and from Jesus Christ, the faithful Witness, the First-born of the dead, and the Ruler of the kings of the earth. To Him Who loveth, and loosed us from our sins in His own blood,
Revelation 7:14
And I have said to him, "My lord, you know." And he said to me, "These are those who come out of the great tribulation; and they washed their robes, and made them white in the blood of the Lamb.

General references

Hebrews 8:12
because I will be merciful to their unrighteousness, and I will remember their sins no more."