Revelation 7:14

So I said to him, "My lord, you know." He said to me, "These are the ones who came out of the great tribulation. They washed their robes, and made them white in the Lamb's blood.

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.

Zechariah 3:3-5

Now Joshua was clothed with filthy garments, and was standing before the angel.

Hebrews 9:14

how much more will the blood of Christ, who through the eternal Spirit offered himself without blemish to God, cleanse our conscience from dead works to serve the living God?

Isaiah 1:18

"Come now, and let us reason together," says the LORD: "Though your sins are like scarlet, they shall be as white as snow. Though they are red like crimson, they shall be as wool.

Revelation 1:5

and from Jesus Christ, the faithful witness, the firstborn of the dead, and the ruler of the kings of the earth. To him who loves us, and freed us from our sins by his blood;

Revelation 22:14

Blessed are they who wash their robes, that they may have the right to the tree of life, and may enter in by the gates into the city.

Exodus 37:3

He cast four rings of gold for it, in its four feet; even two rings on its one side, and two rings on its other side.

Zechariah 13:1

"In that day there will be a spring opened to the house of David and to the inhabitants of Jerusalem, for sin and for uncleanness.

Matthew 24:21

for then there will be great oppression, such as has not been from the beginning of the world until now, no, nor ever will be.

John 13:8-14

Peter said to him, "You will never wash my feet." Jesus answered him, "If I do not wash you, you have no part with me."

John 16:33

I have told you these things, that in me you may have peace. In the world you have oppression; but cheer up. I have overcome the world."

Acts 14:22

confirming the souls of the disciples, exhorting them to continue in the faith, and that through many afflictions we must enter into the Kingdom of God.

Romans 5:3

Not only this, but we also rejoice in our sufferings, knowing that suffering works perseverance;

1 Corinthians 6:11

Such were some of you, but you were washed. But you were sanctified. But you were justified in the name of the Lord Jesus Christ, and in the Spirit of our God.

Ephesians 5:26-27

that he might sanctify it, having cleansed it by the washing of water with the word,

2 Thessalonians 1:4

so that we ourselves boast about you in the churches of God for your patience and faith in all your persecutions and in the afflictions which you endure.

Hebrews 13:12

Therefore Jesus also, that he might sanctify the people through his own blood, suffered outside of the gate.

1 Peter 1:19

but with precious blood, as of a faultless and pure lamb, namely Christ;

Revelation 2:9

"I know your afflictions and your poverty (but you are rich), and the blasphemy of those who say they are Jews, and they are not, but are a synagogue of Satan.

Revelation 5:9

They sang a new song, saying, "You are worthy to take the scroll, and to open its seals: for you were killed, and redeemed us for God with your blood, out of every tribe, language, people, and nation,

Revelation 6:9-11

When he opened the fifth seal, I saw underneath the altar the souls of those who had been killed for the Word of God, and for the testimony which they had.

Revelation 12:11

They overcame him by the blood of the Lamb, and by the word of their testimony. They did not love their life, even to death.

Revelation 15:2

I saw something like a sea of glass mixed with fire, and those who overcame the beast, his image, and the number of his name, standing on the sea of glass, having harps of God.

Revelation 17:6

I saw the woman drunk with the blood of the saints, and with the blood of the martyrs of Jesus. When I saw her, I wondered with great amazement.

Treasury of Scripture Knowledge

Summary

And I said unto him, Sir, thou knowest. And he said to me, These are they which came out of great tribulation, and have washed their robes, and made them white in the blood of the Lamb.

Bible References

Thou

Exodus 37:3
He cast four rings of gold for it, in its four feet; even two rings on its one side, and two rings on its other side.

And have

Revelation 1:5
and from Jesus Christ, the faithful witness, the firstborn of the dead, and the ruler of the kings of the earth. To him who loves us, and freed us from our sins by his blood;
Isaiah 1:18
"Come now, and let us reason together," says the LORD: "Though your sins are like scarlet, they shall be as white as snow. Though they are red like crimson, they shall be as wool.
Zechariah 3:3
Now Joshua was clothed with filthy garments, and was standing before the angel.
Zechariah 13:1
"In that day there will be a spring opened to the house of David and to the inhabitants of Jerusalem, for sin and for uncleanness.
John 13:8
Peter said to him, "You will never wash my feet." Jesus answered him, "If I do not wash you, you have no part with me."
1 Corinthians 6:11
Such were some of you, but you were washed. But you were sanctified. But you were justified in the name of the Lord Jesus Christ, and in the Spirit of our God.
Ephesians 5:26
that he might sanctify it, having cleansed it by the washing of water with the word,
Hebrews 9:14
how much more will the blood of Christ, who through the eternal Spirit offered himself without blemish to God, cleanse our conscience from dead works to serve the living God?
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.

The blood

Revelation 5:9
They sang a new song, saying, "You are worthy to take the scroll, and to open its seals: for you were killed, and redeemed us for God with your blood, out of every tribe, language, people, and nation,
Revelation 12:11
They overcame him by the blood of the Lamb, and by the word of their testimony. They did not love their life, even to death.
Hebrews 13:12
Therefore Jesus also, that he might sanctify the people through his own blood, suffered outside of the gate.
1 Peter 1:19
but with precious blood, as of a faultless and pure lamb, namely Christ;

General references

Genesis 22:8
Abraham said, "God will provide himself the lamb for a burnt offering, my son." So they both went together.
Leviticus 15:5
Whoever touches his bed shall wash his clothes, and bathe himself in water, and be unclean until the evening.
Zechariah 3:3
Now Joshua was clothed with filthy garments, and was standing before the angel.
Matthew 5:4
Blessed are those who mourn, for they shall be comforted.