Leviticus 13:55
He shall examine it again and if the mildew has not changed color, even though it has not spread, it is still unclean. You must burn the object, whether the rot is on the front or the back.
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 anger on you.
Hebrews 6:4-8
Those who were once enlightened, and have tasted of the heavenly gift, and were made partakers of the Holy Spirit,
2 Peter 1:9
For he who lacks these qualities is blind, seeing only what is near, having forgotten the cleansing from his old sins.
2 Peter 2:20-22
After they have escaped the defilements of the world through the knowledge of the Lord and Savior Jesus Christ, they are again entangled and overcome; the last state is worse with them than the first.