Leviticus 13:55

And the priest shall examine [it] after the infection has been washed off, and {if} the infection has not changed its outward appearance and the infection has not spread, it [is] unclean; he must burn it in the fire; it [is] a fungus on its back or on its front.

Ezekiel 24:13

In your uncleanness [is] obscene conduct, because I cleansed you, but you were not clean from your uncleanness; you will not be clean again until {I fully vent my rage} on you.

Hebrews 6:4-8

For [it is] impossible [concerning] those who have once been enlightened, and have tasted the heavenly gift, and become sharers of the Holy Spirit,

2 Peter 1:9

For [the one] for whom these [things] [are] not present is blind, being nearsighted, {having forgotten the cleansing} of his former sins.

2 Peter 2:20-22

For if, [after they] have escaped from the defilements of the world through the knowledge of the Lord and Savior Jesus Christ, and they are again entangled in these [things] [and] succumb to [them], 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 uncleanness [is] obscene conduct, because I cleansed you, but you were not clean from your uncleanness; you will not be clean again until {I fully vent my rage} on you.
Hebrews 6:4
For [it is] impossible [concerning] those who have once been enlightened, and have tasted the heavenly gift, and become sharers of the Holy Spirit,
2 Peter 1:9
For [the one] for whom these [things] [are] not present is blind, being nearsighted, {having forgotten the cleansing} of his former sins.
2 Peter 2:20
For if, [after they] have escaped from the defilements of the world through the knowledge of the Lord and Savior Jesus Christ, and they are again entangled in these [things] [and] succumb to [them], the last [state] has become worse for them than the first.