Psalm 73:13

Verily I have cleansed my heart in vain, and washed my hands in innocency.

Job 34:9

For he hath said, It profiteth a man nothing that he should delight himself with God.

Psalm 26:6

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

Job 21:15

What is the Almighty, that we should serve him? and what profit should we have, if we pray unto him?

Job 35:3

For thou saidst, What advantage will it be unto thee? and, What profit shall I have, if I be cleansed from my sin?

Job 9:27

If I say, I will forget my complaint, I will leave off my heaviness, and comfort myself:

Job 9:31

Yet shalt thou plunge me in the ditch, and mine own clothes shall abhor me.

Psalm 24:4

He that hath clean hands, and a pure heart; who hath not lifted up his soul unto vanity, nor sworn deceitfully.

Psalm 51:10

Create in me a clean heart, O God; and renew a right spirit within me.

Malachi 3:14

Ye have said, It is vain to serve God: and what profit is it that we have kept his ordinance, and that we have walked mournfully before the LORD of hosts?

Hebrews 10:19-22

Having therefore, brethren, boldness to enter into the holiest by the blood of Jesus,

James 4:8

Draw nigh to God, and he will draw nigh to you. Cleanse your hands, ye sinners; and purify your hearts, ye double minded.

Treasury of Scripture Knowledge

Summary

Verily I have cleansed my heart in vain, and washed my hands in innocency.

Bible References

Verily

Job 9:27
If I say, I will forget my complaint, I will leave off my heaviness, and comfort myself:
Job 21:15
What is the Almighty, that we should serve him? and what profit should we have, if we pray unto him?
Job 34:9
For he hath said, It profiteth a man nothing that he should delight himself with God.
Job 35:3
For thou saidst, What advantage will it be unto thee? and, What profit shall I have, if I be cleansed from my sin?
Malachi 3:14
Ye have said, It is vain to serve God: and what profit is it that we have kept his ordinance, and that we have walked mournfully before the LORD of hosts?

Washed

Psalm 24:4
He that hath clean hands, and a pure heart; who hath not lifted up his soul unto vanity, nor sworn deceitfully.
Psalm 26:6
I will wash mine hands in innocency: so will I compass thine altar, O LORD:
Psalm 51:10
Create in me a clean heart, O God; and renew a right spirit within me.
Hebrews 10:19
Having therefore, brethren, boldness to enter into the holiest by the blood of Jesus,
James 4:8
Draw nigh to God, and he will draw nigh to you. Cleanse your hands, ye sinners; and purify your hearts, ye double minded.

General references

Job 9:29
If I be wicked, why then labour I in vain?
Job 34:8
Which goeth in company with the workers of iniquity, and walketh with wicked men.
Psalm 94:19
In the multitude of my thoughts within me thy comforts delight my soul.
1 Corinthians 15:14
And if Christ be not risen, then is our preaching vain, and your faith is also vain.

King James Version Public Domain