Psalm 51:2

Wash me thoroughly from my perversity (iniquity) (guilt), and cleanse me from my sin.

Psalm 51:7

Purify me from sin with hyssop, and I will be clean. Wash me, and I will be whiter than snow.

Isaiah 1:16

Wash yourselves! Become clean! Get your evil deeds out of my sight. Stop doing evil.

Ezekiel 36:25

I will sprinkle clean water on you and make you clean instead of unclean. Then I will cleanse you from all your idols.

Acts 22:16

Wait no longer! Get up and be baptized and have your sins washed away by praying to him.'

Revelation 1:5

And from Jesus Christ, who is the Faithful Witness, and the firstborn from the dead, and the Ruler of the kings of the earth. To the one who loves us and released us from our sins by his blood.

Jeremiah 4:14

O Jerusalem, wash the evil from your heart so that you may be saved. How long will your wicked thoughts lodge within you?

1 Corinthians 6:11

That is what some of you were. You have been washed clean and now you are sanctified. The Spirit of our God declares you righteous in the name of the Lord Jesus.

Hebrews 10:21-22

having a high priest over the house of God,

Revelation 7:14

I said to him: Sir, 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 blood of the Lamb.

Psalm 19:12

Who can notice (discern) (understand) every mistake? Forgive my hidden faults.

Zechariah 13:1

A fountain for sin and for uncleanness will be opened for the house of David.

Hebrews 9:13-14

The blood of goats and bulls, and the ashes from the burning of a young cow, sprinkled on the unclean made them outwardly clean.

1 John 1:7-9

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.

Treasury of Scripture Knowledge

Summary

Wash me throughly from mine iniquity, and cleanse me from my sin.

Bible References

Cleanse

Psalm 51:7
Purify me from sin with hyssop, and I will be clean. Wash me, and I will be whiter than snow.
Psalm 19:12
Who can notice (discern) (understand) every mistake? Forgive my hidden faults.

General references

Leviticus 15:5
Those who touch his bed must wash their clothes and their bodies. They will be unclean until evening.
Leviticus 16:30
On that day the ritual is to be performed to purify them from all their sins, so that they will be ritually clean.
Jeremiah 33:8
I will cleanse them from all the sins that they have committed against me. I will forgive them for all the sins that they have committed against me and for rebelling against me.