Leviticus 13:39

then the priest shall look, and if the bright spots on the skin of their bodies is a dull white, it is [only] a rash that has broken out on the skin; he is clean.

Ecclesiastes 7:20

Indeed, there is not a righteous man on earth who always does good and who never sins.

Romans 7:22-25

For I joyfully delight in the law of God in my inner self [with my new nature],

For we all stumble and sin in many ways. If anyone does not stumble in what he says [never saying the wrong thing], he is a perfect man [fully developed in character, without serious flaws], able to bridle his whole body and rein in his entire nature [taming his human faults and weaknesses].

Treasury of Scripture Knowledge

Summary

Leviticus 13:39

Then the priest shall look: and, behold, if the bright spots in the skin of their flesh be darkish white; it is a freckled spot that groweth in the skin; he is clean.