Psalm 51:2

Wash me thoroughly from my iniquity, and cleanse me from my sin.

Psalm 51:7

Purify me with hyssop, and I shall be clean. Wash me, and I shall be whiter than snow.

Isaiah 1:16

Wash you, make you clean, put away the evil of your doings from before my eyes. Cease to do evil.

Ezekiel 36:25

And I will sprinkle clean water upon you, and ye shall be clean. I will cleanse you from all your filthiness, and from all your idols.

Acts 22:16

And now what is it going to be? Having arisen, immerse and wash away thy sins, calling on the name of the Lord.

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 washed us from our sins by his blood

1 Corinthians 6:11

And some of you were these things, but ye were washed, but ye were sanctified, but ye were made righteous in the name of the Lord Jesus, and in the Spirit of our God.

Hebrews 10:21-22

and a great priest over the house of God,

Revelation 7:14

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

Psalm 19:12

Who can discern [his] errors? Clear thou me from hidden [faults].

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.

Hebrews 9:13-14

For if the blood of bulls and goats, and the ashes of a heifer, sprinkling those who were defiled, sanctifies for the purification of the flesh,

1 John 1:7-9

But if we walk in the light, as he is in the light, we have fellowship with each other, and the blood of Jesus Christ his Son cleanses us from every 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 with hyssop, and I shall be clean. Wash me, and I shall be whiter than snow.
Psalm 19:12
Who can discern [his] errors? Clear thou me from hidden [faults].

General references

Leviticus 15:5
And whoever touches his bed shall wash his clothes, and bathe himself in water, and be unclean until the evening.
Leviticus 16:30
For on this day atonement shall be made for you, to cleanse you. Ye shall be clean from all your sins before LORD.
Jeremiah 33:8
And I will cleanse them from all their iniquity by which they have sinned against me. And I will pardon all their iniquities by which they have sinned against me, and by which they have transgressed against me.