Zechariah 13:1

In that day there is a fountain opened To the house of David And to the inhabitants of Jerusalem, For sin and for impurity.

Psalm 51:2

Thoroughly wash me from mine iniquity, And from my sin cleanse me,

Ezekiel 36:25

And I have sprinkled over you clean water, And ye have been clean; From all your uncleannesses, and from all your idols, I do cleanse you.

Psalm 51:7

Thou cleansest me with hyssop and I am clean, Washest me, and than snow I am whiter.

Isaiah 1:16-18

Wash ye, make ye pure, Turn aside the evil of your doings, from before Mine eyes, Cease to do evil, learn to do good.

Zechariah 12:3

And it hath come to pass, in that day, I make Jerusalem a burdensome stone to all the peoples, All loading it are completely pressed down, And gathered against it have been all nations of the earth.

John 1:29

on the morrow John seeth Jesus coming unto him, and saith, 'Lo, the Lamb of God, who is taking away the sin of the world;

Leviticus 15:2-33

Speak unto the sons of Israel, and ye have said unto them, When there is an issue out of the flesh of any man, for his issue he is unclean;

Numbers 19:9-22

And a clean man hath gathered the ashes of the cow, and hath placed at the outside of the camp, in a clean place, and it hath become to the company of the sons of Israel a charge for waters of separation -- it is a cleansing;

Job 9:30-31

If I have washed myself with snow-water, And purified with soap my hands,

Jeremiah 17:13

The hope of Israel is Jehovah, All forsaking Thee are ashamed, And 'My apostates' in the earth are written, For they have forsaken Jehovah, A fountain of living waters.

Ezekiel 36:17

'Son of man, The house of Israel are dwelling on their land, And they defile it by their way and by their doings, As the uncleanness of a separated one hath their way been before Me.

Ezekiel 36:29

And I have saved you from all your uncleannesses, And I have called unto the corn, and multiplied it, And I have put no famine upon you.

Zechariah 12:7-8

And saved hath Jehovah the tents of Judah first, So that become not great against Judah Doth the beauty of the house of David, And the beauty of the inhabitant of Jerusalem.

Zechariah 12:10-11

And I have poured on the house of David, And on the inhabitant of Jerusalem, A spirit of grace and supplications, And they have looked unto Me whom they pierced, And they have mourned over it, Like a mourning over the only one, And they have been in bitterness for it, Like a bitterness over the first-born.

John 19:34-35

but one of the soldiers with a spear did pierce his side, and immediately there came forth blood and water;

1 Corinthians 6:11

And certain of you were these! but ye were washed, but ye were sanctified, but ye were declared righteous, in the name of the Lord Jesus, and in the Spirit of our God.

Ephesians 5:25-27

The husbands! love your own wives, as also the Christ did love the assembly, and did give himself for it,

Titus 3:5-7

(not by works that are in righteousness that we did but according to His kindness,) He did save us, through a bathing of regeneration, and a renewing of the Holy Spirit,

Hebrews 9:13-14

for if the blood of bulls, and goats, and ashes of an heifer, sprinkling those defiled, doth sanctify to the purifying of the flesh,

1 Peter 1:19

but with precious blood, as of a lamb unblemished and unspotted -- Christ's --

1 John 1:7

and if in the light we may walk, as He is in the light -- we have fellowship one with another, and the blood of Jesus Christ His Son doth cleanse us from every sin;

1 John 5:6

This one is he who did come through water and blood -- Jesus the Christ, not in the water only, but in the water and the blood; and the Spirit it is that is testifying, because the Spirit is the truth,

Revelation 1:5-6

and from Jesus Christ, the faithful witness, the first-born out of the dead, and the ruler of the kings of the earth; to him who did love us, and did bathe us from our sins in his blood,

Revelation 7:13-14

And answer did one of the elders, saying to me, 'These, who have been arrayed with the white robes -- who are they, and whence came they?'

Treasury of Scripture Knowledge

Summary

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.

The house

Bible References

The house

Zechariah 12:7
And saved hath Jehovah the tents of Judah first, So that become not great against Judah Doth the beauty of the house of David, And the beauty of the inhabitant of Jerusalem.

Uncleanness

Leviticus 15:2
Speak unto the sons of Israel, and ye have said unto them, When there is an issue out of the flesh of any man, for his issue he is unclean;
Numbers 19:9
And a clean man hath gathered the ashes of the cow, and hath placed at the outside of the camp, in a clean place, and it hath become to the company of the sons of Israel a charge for waters of separation -- it is a cleansing;
Ezekiel 36:17
'Son of man, The house of Israel are dwelling on their land, And they defile it by their way and by their doings, As the uncleanness of a separated one hath their way been before Me.

General references

Exodus 40:7
and hast put the laver between the tent of meeting and the altar, and hast put water there.
Leviticus 15:27
and any one who is coming against them is unclean, and hath washed his garments, and hath bathed with water, and been unclean till the evening.
Leviticus 16:19
and he hath sprinkled on it of the blood with his finger seven times, and hath cleansed it, and hath hallowed it from the uncleannesses of the sons of Israel.
Jeremiah 33:8
And cleansed them from all their iniquity, That they have sinned against Me, And I have pardoned all their iniquities, That they have sinned against Me, And that they transgressed against Me.
Matthew 5:4
Happy the mourning -- because they shall be comforted.