7 distinct Hebrew words appear in this verse.

Quoted or echoed by 1 later passage.

• 2Pet 2:22 · echo
  "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."
  Proverbs: a dog returns to its vomit — Peter on apostates

4 passages from patristic writers, Reformers, and church catechisms citing this verse.

• 2Pet 2:22 — 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.
• 2Pet 2:22 — 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.
• Exod 8:15 — But when Pharaoh saw that there was respite, he hardened his heart, and hearkened not unto them; as the LORD had said.
• Isa 28:8 — For all tables are full of vomit and filthiness, so that there is no place clean.
• Jer 34:11 — But afterward they turned, and caused the servants and the handmaids, whom they had let go free, to return, and brought them into subjection for servants and for handmaids.
• Matt 7:6 — Give not that which is holy unto the dogs, neither cast ye your pearls before swine, lest they trample them under their feet, and turn again and rend you.
• Matt 12:45 — Then goeth he, and taketh with himself seven other spirits more wicked than himself, and they enter in and dwell there: and the last state of that man is worse than the first. Even so shall it be also
• Phil 3:2 — Beware of dogs, beware of evil workers, beware of the concision.
• Prov 23:35 — They have stricken me, shalt thou say, and I was not sick; they have beaten me, and I felt it not: when shall I awake? I will seek it yet again.