Revelation 7:14

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

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 Christ his Son cleanses us from all sin.

Zechariah 3:3-5

And Joshua was clothed with filthy garments, and stood before the Angel.

Hebrews 9:14

how much rather shall the blood of the Christ, who by the eternal Spirit offered himself spotless to God, purify your conscience from dead works to worship the living God?

Isaiah 1:18

Come now, let us reason together, saith Jehovah: though your sins be as scarlet, they shall be as white as snow; though they be red like crimson, they shall be as wool.

Revelation 1:5

and from Jesus Christ, the faithful witness, the firstborn from the dead, and the prince of the kings of the earth. To him who loves us, and has washed us from our sins in his blood,

Revelation 22:14

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

Exodus 37:3

And he cast for it four rings of gold, for its four corners: two rings on the one side of it, and two rings on the other side of it.

Zechariah 13:1

In that day there shall be a fountain opened to the house of David and to the inhabitants of Jerusalem for sin and for uncleanness.

Matthew 24:21

for then shall there be great tribulation, such as has not been from the beginning of the world until now, nor ever shall be;

John 13:8-14

Peter says to him, Thou shalt never wash my feet. Jesus answered him, Unless I wash thee, thou hast not part with me.

John 16:33

These things have I spoken to you that in me ye might have peace. In the world ye have tribulation; but be of good courage: I have overcome the world.

Acts 14:22

establishing the souls of the disciples, exhorting them to abide in the faith, and that through many tribulations we must enter into the kingdom of God.

Romans 5:3

And not only that, but we also boast in tribulations, knowing that tribulation works endurance;

1 Corinthians 6:11

And these things 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 5:26-27

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

2 Thessalonians 1:4

so that we ourselves make our boast in you in the assemblies of God for your endurance and faith in all your persecutions and tribulations, which ye are sustaining;

Hebrews 13:12

Wherefore also Jesus, that he might sanctify the people by his own blood, suffered without the gate:

1 Peter 1:19

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

Revelation 2:9

I know thy tribulation and thy poverty; but thou art rich; and the railing of those who say that they themselves are Jews, and are not, but a synagogue of Satan.

Revelation 5:9

And they sing a new song, saying, Thou art worthy to take the book, and to open its seals; because thou hast been slain, and hast redeemed to God, by thy blood, out of every tribe, and tongue, and people, and nation,

Revelation 6:9-11

And when it opened the fifth seal, I saw underneath the altar the souls of them that had been slain for the word of God, and for the testimony which they held;

Revelation 12:11

and they have overcome him by reason of the blood of the Lamb, and by reason of the word of their testimony, and have not loved their life even unto death.

Revelation 15:2

And I saw as a glass sea, mingled with fire, and those that had gained the victory over the beast, and over its image, and over the number of its name, standing upon the glass sea, having harps of God.

Revelation 17:6

And I saw the woman drunk with the blood of the saints, and with the blood of the witnesses of Jesus. And I wondered, seeing her, with great wonder.

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
And he cast for it four rings of gold, for its four corners: two rings on the one side of it, and two rings on the other side of it.

And have

Revelation 1:5
and from Jesus Christ, the faithful witness, the firstborn from the dead, and the prince of the kings of the earth. To him who loves us, and has washed us from our sins in his blood,
Isaiah 1:18
Come now, let us reason together, saith Jehovah: though your sins be as scarlet, they shall be as white as snow; though they be red like crimson, they shall be as wool.
Zechariah 3:3
And Joshua was clothed with filthy garments, and stood before the Angel.
Zechariah 13:1
In that day there shall be a fountain opened to the house of David and to the inhabitants of Jerusalem for sin and for uncleanness.
John 13:8
Peter says to him, Thou shalt never wash my feet. Jesus answered him, Unless I wash thee, thou hast not part with me.
1 Corinthians 6:11
And these things 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
in order that he might sanctify it, purifying it by the washing of water by the word,
Hebrews 9:14
how much rather shall the blood of the Christ, who by the eternal Spirit offered himself spotless to God, purify your conscience from dead works to worship 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 Christ his Son cleanses us from all sin.

The blood

Revelation 5:9
And they sing a new song, saying, Thou art worthy to take the book, and to open its seals; because thou hast been slain, and hast redeemed to God, by thy blood, out of every tribe, and tongue, and people, and nation,
Revelation 12:11
and they have overcome him by reason of the blood of the Lamb, and by reason of the word of their testimony, and have not loved their life even unto death.
Hebrews 13:12
Wherefore also Jesus, that he might sanctify the people by his own blood, suffered without the gate:
1 Peter 1:19
but by precious blood, as of a lamb without blemish and without spot, the blood of Christ,

General references

Genesis 22:8
And Abraham said, My son, God will provide himself with the sheep for a burnt-offering. And they went both of them together.
Leviticus 15:5
And whoever toucheth his bed shall wash his garments, and bathe in water, and be unclean until the even.
Zechariah 3:3
And Joshua was clothed with filthy garments, and stood before the Angel.
Matthew 5:4
Blessed they that mourn, for they shall be comforted.