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."

Treasury of Scripture Knowledge

Summary

But it is happened unto them according to the true proverb, The dog is turned to his own vomit again; and the sow that was washed to her wallowing in the mire.

Bible References

General references

Matthew 7:27
and the rain descended, and the streams came, and the winds blew and beat upon that house; and it fell; and great was its fall."
Luke 14:30
saying, 'This man began to build, and was not able to finish!'
Luke 17:32
Remember Lot's wife.
1 Timothy 5:15
for already some turned aside after Satan.