Psalm 73:13

Only -- a vain thing! I have purified my heart, And I wash in innocency my hands,

Job 34:9

For he hath said, 'It doth not profit a man, When he delighteth himself with God.'

Psalm 26:6

I wash in innocency my hands, And I compass Thine altar, O Jehovah.

Job 21:15

What is the Mighty One that we serve Him? And what do we profit when we meet with Him?'

Job 35:3

For thou sayest, 'What doth it profit Thee! What do I profit from my sin?'

Job 9:27

Though I say, 'I forget my talking, I forsake my corner, and I brighten up!'

Job 9:31

Then in corruption Thou dost dip me, And my garments have abominated me.

Psalm 24:4

The clean of hands, and pure of heart, Who hath not lifted up to vanity his soul, Nor hath sworn to deceit.

Psalm 51:10

A clean heart prepare for me, O God, And a right spirit renew within me.

Malachi 3:14

Ye have said, 'A vain thing to serve God! And what gain when we kept His charge? And when we have gone in black, Because of Jehovah of Hosts?

Hebrews 10:19-22

Having, therefore, brethren, boldness for the entrance into the holy places, in the blood of Jesus,

James 4:8

draw nigh to God, and He will draw nigh to you; cleanse hands, ye sinners! and purify hearts, ye two-souled!

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
Though I say, 'I forget my talking, I forsake my corner, and I brighten up!'
Job 21:15
What is the Mighty One that we serve Him? And what do we profit when we meet with Him?'
Job 34:9
For he hath said, 'It doth not profit a man, When he delighteth himself with God.'
Job 35:3
For thou sayest, 'What doth it profit Thee! What do I profit from my sin?'
Malachi 3:14
Ye have said, 'A vain thing to serve God! And what gain when we kept His charge? And when we have gone in black, Because of Jehovah of Hosts?

Washed

Psalm 24:4
The clean of hands, and pure of heart, Who hath not lifted up to vanity his soul, Nor hath sworn to deceit.
Psalm 26:6
I wash in innocency my hands, And I compass Thine altar, O Jehovah.
Psalm 51:10
A clean heart prepare for me, O God, And a right spirit renew within me.
Hebrews 10:19
Having, therefore, brethren, boldness for the entrance into the holy places, in the blood of Jesus,
James 4:8
draw nigh to God, and He will draw nigh to you; cleanse hands, ye sinners! and purify hearts, ye two-souled!

General references

Job 9:29
I -- I am become wicked; why is this? In vain I labour.
Job 34:8
And he hath travelled for company With workers of iniquity, So as to go with men of wickedness.
Psalm 94:19
In the abundance of my thoughts within me, Thy comforts delight my soul.
1 Corinthians 15:14
and if Christ hath not risen, then void is our preaching, and void also your faith,