2 Peter 2:22
Of them the proverbs are true: “A dog returns to its vomit,” and, “A sow that is washed goes back to her wallowing in the mud.”

Matthew 12:43-45
When an unclean spirit comes out of a man, it passes through arid places seeking rest and does not find it. / Then it says, ‘I will return to the house I left.’ On its return, it finds the house vacant, swept clean, and put in order. / Then it goes and brings with it seven other spirits more wicked than itself, and they go in and dwell there. And the final plight of that man is worse than the first. So will it be with this wicked generation.”

Luke 11:24-26
When an unclean spirit comes out of a man, it passes through arid places seeking rest and does not find it. Then it says, ‘I will return to the house I left.’ / On its return, it finds the house swept clean and put in order. / Then it goes and brings seven other spirits more wicked than itself, and they go in and dwell there. And the final plight of that man is worse than the first.”

Hebrews 6:4-6
It is impossible for those who have once been enlightened, who have tasted the heavenly gift, who have shared in the Holy Spirit, / who have tasted the goodness of the word of God and the powers of the coming age— / and then have fallen away—to be restored to repentance, because they themselves are crucifying the Son of God all over again and subjecting Him to open shame.

Hebrews 10:26-27
If we deliberately go on sinning after we have received the knowledge of the truth, no further sacrifice for sins remains, / but only a fearful expectation of judgment and of raging fire that will consume all adversaries.

Philippians 3:18-19
For as I have often told you before, and now say again even with tears: Many live as enemies of the cross of Christ. / Their end is destruction, their god is their belly, and their glory is in their shame. Their minds are set on earthly things.

Galatians 4:9
But now that you know God, or rather are known by God, how is it that you are turning back to those weak and worthless principles? Do you wish to be enslaved by them all over again?

Romans 6:21
What fruit did you reap at that time from the things of which you are now ashamed? The outcome of those things is death.

1 Corinthians 15:33-34
Do not be deceived: “Bad company corrupts good character.” / Sober up as you ought, and stop sinning; for some of you are ignorant of God. I say this to your shame.

James 1:23-24
For anyone who hears the word but does not carry it out is like a man who looks at his face in a mirror, / and after observing himself goes away and immediately forgets what he looks like.

Isaiah 19:14
The LORD has poured into her a spirit of confusion. Egypt has been led astray in all she does, as a drunkard staggers through his own vomit.

Jeremiah 13:23
Can the Ethiopian change his skin, or the leopard his spots? Neither are you able to do good—you who are accustomed to doing evil.

Psalm 107:17
Fools, in their rebellious ways, and through their iniquities, suffered affliction.

Psalm 85:8
I will listen to what God the LORD will say; for He will surely speak peace to His people and His saints; He will not let them return to folly.

Psalm 14:1
For the choirmaster. Of David. The fool says in his heart, “There is no God.” They are corrupt; their acts are vile. There is no one who does good.