1 Corinthians 4:4

Though I am not conscious of having been in any way unfaithful, yet I do not for that reason stand acquitted; but He whose scrutiny I must undergo is the Lord.

James 3:2

For we often stumble and fall, all of us. If there is any one who never stumbles in speech, that man has reached maturity of character and is able to curb his whole nature.

1 John 1:8-10

If we claim to be already free from sin, we lead ourselves astray and the truth has no place in our hearts.

Treasury of Scripture Knowledge

Summary

Who can say, I have made my heart clean, I am pure from my sin?

Bible References

General references

1 Corinthians 4:4
Though I am not conscious of having been in any way unfaithful, yet I do not for that reason stand acquitted; but He whose scrutiny I must undergo is the Lord.
James 3:2
For we often stumble and fall, all of us. If there is any one who never stumbles in speech, that man has reached maturity of character and is able to curb his whole nature.
1 John 1:8
If we claim to be already free from sin, we lead ourselves astray and the truth has no place in our hearts.