David made some strong claims for himself in 2 Samuel 22:21-25:

21 “The LORD has dealt with me according to my righteousness;
according to the cleanness of my hands he has rewarded me.
22 For I have kept the ways of the LORD;
I have not done evil by turning from my God.
23 All his laws are before me;
I have not turned away from his decrees.
24 I have been blameless before him
and have kept myself from sin.
25 The LORD has rewarded me according to my righteousness,
according to my cleanness in his sight. (NIV)

All of us who have ever read it know our own hearts and question whether we could make such a claim.… Read the rest