Leviticus 13:55

After the article with the mark has been washed, the priest shall again look, and if the mark has not changed its appearance, even though the mark has not spread, it is unclean; you shall burn it in the fire, whether an eating away has produced bareness on the top or on the front of it.

Ezekiel 24:13

“In your filthiness is lewdness.
Because I would have cleansed you,
Yet you are not clean,
You will not be cleansed from your filthiness again
Until I have spent My wrath on you.

Hebrews 6:4-8

For in the case of those who have once been enlightened and have tasted of the heavenly gift and have been made partakers of the Holy Spirit,

2 Peter 1:9

For he who lacks these qualities is blind or short-sighted, having forgotten his purification from his former sins.

2 Peter 2:20-22

For if, after they have escaped the defilements of the world by the knowledge of the Lord and Savior Jesus Christ, they are again entangled in them and are overcome, the last state has become worse for them than the first.

Treasury of Scripture Knowledge

Summary

And the priest shall look on the plague, after that it is washed: and, behold, if the plague have not changed his colour, and the plague be not spread; it is unclean; thou shalt burn it in the fire; it is fret inward, whether it be bare within or without.

Bible References

After

Ezekiel 24:13
“In your filthiness is lewdness.
Because I would have cleansed you,
Yet you are not clean,
You will not be cleansed from your filthiness again
Until I have spent My wrath on you.
Hebrews 6:4
For in the case of those who have once been enlightened and have tasted of the heavenly gift and have been made partakers of the Holy Spirit,
2 Peter 1:9
For he who lacks these qualities is blind or short-sighted, having forgotten his purification from his former sins.
2 Peter 2:20
For if, after they have escaped the defilements of the world by the knowledge of the Lord and Savior Jesus Christ, they are again entangled in them and are overcome, the last state has become worse for them than the first.