Psalm 26:6

I will make my hands clean from sin; so will I go round your altar, O Lord;

Psalm 73:13

As for me, I have made my heart clean to no purpose, washing my hands in righteousness;

Exodus 30:19-20

That it may be used by Aaron and his sons for washing their hands and feet;

Psalm 43:4

Then I will go up to the altar of God, to the God of my joy; I will be glad and give praise to you on an instrument of music, O God, my God.

Isaiah 1:16-18

Be washed, make yourselves clean; put away the evil of your doings from before my eyes; let there be an end of sinning;

Malachi 2:11-13

Judah has been acting falsely, and a disgusting thing has been done in Jerusalem; for Judah has made unclean the holy place of the Lord which is dear to him, and has taken as his wife the daughter of a strange god.

Matthew 5:23-24

If then you are making an offering at the altar and there it comes to your mind that your brother has something against you,

1 Corinthians 11:28-29

But let no man take of the bread and the cup without testing himself.

1 Timothy 2:8

It is my desire, then, that in every place men may give themselves to prayer, lifting up holy hands, without wrath or argument.

Titus 3:5

Not by works of righteousness which we did ourselves, but in the measure of his mercy, he gave us salvation, through the washing of the new birth and the giving of new life in the Holy Spirit,

Hebrews 10:19-22

So then, my brothers, being able to go into the holy place without fear, because of the blood of Jesus,

Treasury of Scripture Knowledge

Summary

I will wash mine hands in innocency: so will I compass thine altar, O LORD:

Bible References

Wash

Psalm 73:13
As for me, I have made my heart clean to no purpose, washing my hands in righteousness;
Exodus 30:19
That it may be used by Aaron and his sons for washing their hands and feet;
Isaiah 1:16
Be washed, make yourselves clean; put away the evil of your doings from before my eyes; let there be an end of sinning;
Titus 3:5
Not by works of righteousness which we did ourselves, but in the measure of his mercy, he gave us salvation, through the washing of the new birth and the giving of new life in the Holy Spirit,
Hebrews 10:19
So then, my brothers, being able to go into the holy place without fear, because of the blood of Jesus,

So will

Psalm 43:4
Then I will go up to the altar of God, to the God of my joy; I will be glad and give praise to you on an instrument of music, O God, my God.
Malachi 2:11
Judah has been acting falsely, and a disgusting thing has been done in Jerusalem; for Judah has made unclean the holy place of the Lord which is dear to him, and has taken as his wife the daughter of a strange god.
Matthew 5:23
If then you are making an offering at the altar and there it comes to your mind that your brother has something against you,
1 Corinthians 11:28
But let no man take of the bread and the cup without testing himself.
1 Timothy 2:8
It is my desire, then, that in every place men may give themselves to prayer, lifting up holy hands, without wrath or argument.

General references

Exodus 30:19
That it may be used by Aaron and his sons for washing their hands and feet;
Exodus 40:7
And let the washing-vessel, with water in it, be put between the Tent of meeting and the altar.
Leviticus 15:5
And anyone touching his bed is to have his clothing washed and his body bathed in water and be unclean till evening.
Job 9:30
If I am washed with snow water, and make my hands clean with soap;

Basic English, produced by Mr C. K. Ogden of the Orthological Institute - public domain