What the true proverb says has happened to them: “The dog returns to its own vomit, and the sow, after washing herself, returns to wallow in the mire.”
English Standard Version (ESV)
This verse powerfully highlights the deep-seated nature of sin and rebellion. It's not just about a momentary lapse; it's about a fundamental preference for the filth of sin, even after a superficial attempt at cleansing. The imagery starkly reveals that true change comes from the heart, not just outward appearances.
What the true proverb says has happened to them: “The dog returns to its own vomit, and the sow, after washing herself, returns to wallow in the mire.”
English Standard Version (ESV)
Peter is exposing and warning against false teachers who have infiltrated the early church, promising freedom but leading people back into sin. He uses this vivid proverb to show how these individuals, despite any outward appearance of change, ultimately relapse into their old, corrupt ways, proving their deceptive nature. This follows his earlier warnings about their destructive heresies and precedes his explanation of the coming judgment on these deceivers.
Peter is warning believers about people who look like they’re on the right path, but are actually leading others astray. This verse is a stark illustration of what happens to those who fall for their deception.
This chapter is a serious warning about false teachers who infiltrate the community of faith. Peter uses vivid imagery to show how destructive their influence is, both to themselves and to those who follow them. They often sound convincing, but their lives and teachings reveal a deeper corruption.
A Grim Reality
Peter doesn’t pull punches here. He quotes an ancient proverb to describe the inevitable spiritual relapse of those who, despite outward appearances or a brief turn towards righteousness, are ultimately consumed by their sinful nature. It’s a picture of deep-seated corruption that the world cannot truly cleanse.
What does it really mean to be changed by God? This proverb paints a stark picture of what isn’t true transformation, forcing us to consider what is.
The proverb uses the imagery of a dog and a pig to show that external cleaning is not enough to change an inherently corrupted nature. A dog’s instinct is to return to its vomit; a pig’s instinct, even after a bath, is to return to the mud.
Beyond the Surface
This speaks to a profound truth: true change comes from within. It’s not about putting on a religious act or temporarily cleaning up your life. Genuine transformation is a work of God’s Spirit, fundamentally altering our desires and nature, so that we no longer to return to the mire of sin. It’s about a renewed heart and mind, not just a changed behavior.
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Understand the original words
paroimia · Greek Noun
A pithy, traditional saying that expresses a universal truth or common observation about human nature or conduct.
kyōn · Greek Noun
In biblical contexts, dogs were often considered unclean, lowly, or untrustworthy animals; the imagery here represents those who are base, greedy, or spiritually degenerated.
hys · Greek Noun
Biblically considered an unclean animal; used here as a graphic metaphor for one who has the appearance of being cleansed or reformed but whose fundamental nature remains unchanged and prone to uncleanness.
borboros · Greek Noun
A substance representing filth, impurity, and sin; metaphorically used to describe the corrupt world or sinful lifestyle that a person initially abandoned but has now returned to.
This is the proverb directly quoted in 2 Peter, highlighting the foolishness of returning to sin, reinforcing the passage's central theme.
Matthew 12:43-45Jesus uses a similar analogy of an unclean spirit returning to a cleaned-but-empty person, illustrating how a relapse into sin after a period of cleansing can lead to a worse spiritual state.
Hebrews 6:4-6This passage describes the impossibility of renewing to repentance those who fall away after experiencing God's goodness, echoing the severe warning against apostasy found in 2 Peter.
Jeremiah 12:3The prophet Jeremiah laments the prosperity of the wicked, calling them out for their deep-rooted corruption that persists despite opportunities for change, similar to the unrepentant nature described in 2 Peter.
This verse powerfully highlights the deep-seated nature of sin and rebellion. It's not just about a momentary lapse; it's about a fundamental preference for the filth of sin, even after a superficial attempt at cleansing. The imagery starkly reveals that true change comes from the heart, not just outward appearances.
Peter is exposing and warning against false teachers who have infiltrated the early church, promising freedom but leading people back into sin. He uses this vivid proverb to show how these individuals, despite any outward appearance of change, ultimately relapse into their old, corrupt ways, proving their deceptive nature. This follows his earlier warnings about their destructive heresies and precedes his explanation of the coming judgment on these deceivers.
Peter is exposing and warning against false teachers who have infiltrated the early church, promising freedom but leading people back into sin. He uses this vivid proverb to show how these individuals, despite any outward appearance of change, ultimately relapse into their old, corrupt ways, proving their deceptive nature. This follows his earlier warnings about their destructive heresies and precedes his explanation of the coming judgment on these deceivers.
"What the true proverb says has happened to them: “The dog returns to its own vomit, and the sow, after washing herself, returns to wallow in the mire.”" — This verse powerfully highlights the deep-seated nature of sin and rebellion. It's not just about a momentary lapse; it's about a fundamental preference for the filth of sin, even after a superficial…
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Last reviewed October 2026