Leviticus 13:55
and the priest shall look, after that the plague is washed; and, behold, if the plague have not changed its color, and the plague be not spread, it is unclean; thou shalt burn it in the fire: it is a fret, whether the bareness be within or without.
Ezekiel 24:13
In thy filthiness is lewdness: because I have cleansed thee and thou wast not cleansed, thou shalt not be cleansed from thy filthiness any more, till I have caused my wrath toward thee to rest.
Hebrews 6:4-8
For as touching those who were once enlightened and tasted of the heavenly gift, and were made partakers of the Holy Spirit,
2 Peter 1:9
For he that lacketh these things is blind, seeing only what is near, having forgotten the cleansing from his old sins.
2 Peter 2:20-22
For if, after they have escaped the defilements of the world through the knowledge of the Lord and Saviour Jesus Christ, they are again entangled therein and overcome, the last state is become worse with them than the first.