Job 27:6

I will keep it safe, and will not let it go: my heart has nothing to say against any part of my life.

Job 2:3

And the Lord said to the Satan, Have you taken note of my servant Job, for there is no one like him on the earth, a man without sin and upright, fearing God and keeping himself far from evil? and he still keeps his righteousness, though you have been moving me to send destruction on him without cause.

Acts 24:16

And in this, I do my best at all times to have no reason for shame before God or men.

Psalm 18:20-23

The Lord gives me the reward of my righteousness, because my hands are clean before him.

Proverbs 4:13

Take learning in your hands, do not let her go: keep her, for she is your life.

2 Corinthians 12:11

I have been forced by you to become foolish, though it was right for my praise to have come from you: for in no way was I less than the chief of the Apostles, though I am nothing.

1 John 3:20-21

When our heart says that we have done wrong; because God is greater than our heart, and has knowledge of all things.

Treasury of Scripture Knowledge

Summary

My righteousness I hold fast, and will not let it go: my heart shall not reproach me so long as I live.

General references

Bible References

I hold fast

Job 2:3
And the Lord said to the Satan, Have you taken note of my servant Job, for there is no one like him on the earth, a man without sin and upright, fearing God and keeping himself far from evil? and he still keeps his righteousness, though you have been moving me to send destruction on him without cause.
Psalm 18:20
The Lord gives me the reward of my righteousness, because my hands are clean before him.
Proverbs 4:13
Take learning in your hands, do not let her go: keep her, for she is your life.

My heart

Acts 24:16
And in this, I do my best at all times to have no reason for shame before God or men.
2 Corinthians 12:11
I have been forced by you to become foolish, though it was right for my praise to have come from you: for in no way was I less than the chief of the Apostles, though I am nothing.
1 John 3:20
When our heart says that we have done wrong; because God is greater than our heart, and has knowledge of all things.

General references

1 John 3:21
My loved ones, if our heart does not say that we have done wrong, we have no fear before him;

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