Hebrews 6:4-8
For as to those who were once enlightened, and tasted of the heavenly gift, and became partakers of the Holy Spirit,
2 Peter 2:20
For if, after having escaped the defilements of the world in a full knowledge of our Lord and Savior Jesus Christ, but, having again become entangled with these, they are overcome, the last state has become worse with them than the first.
2 Peter 2:22
It has happened to them according to the true proverb, "A dog having returned to his own vomit"; and "A sow that was washed, to her wallowing in mire."
Jude 1:12
These are the hidden rocks in your love-feasts, feasting sumptuously together, feeding themselves without fear; clouds without water, borne along by winds; autumnal trees, without fruit, twice dead, plucked up by the roots;