1 Corinthians 4:4

For although my conscience does not accuse me, yet I am not entirely vindicated by that. It is the Lord Himself who must examine me.

Hebrews 9:7

but into the second or inner part nobody but the high priest may go, and he only once a year, and never without blood which he offers for himself and for the sins committed in ignorance by the people.

1 John 1:7

But if we continue to live in the light, just as He is in the light, we have unbroken fellowship with one another, and the blood of Jesus His Son continues to cleanse us from every sin.

Treasury of Scripture Knowledge

Summary

Who can understand his errors? cleanse thou me from secret faults.

Bible References

Can

1 Corinthians 4:4
For although my conscience does not accuse me, yet I am not entirely vindicated by that. It is the Lord Himself who must examine me.
Hebrews 9:7
but into the second or inner part nobody but the high priest may go, and he only once a year, and never without blood which he offers for himself and for the sins committed in ignorance by the people.