Leviticus 13:55
And the priest shall look on the plague after it is washed: and behold, if the plague hath not changed its color, and the plague hath not spread; it is unclean; thou shalt burn it in the fire; it is fret inward, whether it is bare within or without.
Ezekiel 24:13
In thy filthiness is lewdness: because I have purged thee, and thou wast not purged, thou shalt not be purged from thy filthiness any more, till I have caused my fury to rest upon thee.
Hebrews 6:4-8
For it is impossible for those who have been once enlightened, and have tasted the heavenly gift, and have been made partakers of the Holy Spirit.
2 Peter 1:9
But he that lacketh these things is blind, and cannot see afar off, and hath forgotten that he was purified from his old sins.
2 Peter 2:20-22
For if after they have escaped the pollutions of the world through the knowledge of the Lord and Savior Jesus Christ, they are again entangled in them, and overcome, the latter end is worse with them than the beginning.