Exploring the Meaning of Miasma in Greek

μίασμα refers to “defilement” and appears once in the New Testament, in a warning passage about returning to what one has escaped. In its lone occurrence, it names the condition of the world that can re-entangle and overcome a person after an initial escape.

Root and Related Words

μίασμα (Miasma) is related to the verb μιαίνω (miainō), “to stain” (Strong’s G3392). The relationship highlights the word’s close connection to the idea of something being marked or affected in a way that renders it defiled.

Occurrences

For if, after they have escaped the defilement of the world through the knowledge of the Lord and Savior Jesus Christ, they are again entangled in it and overcome, the last state has become worse for them than the first. (2 Peter 2:20)

In 2 Peter 2:20, μίασμα names what is escaped: “the defilement of the world.” The verse frames this defilement as a sphere or condition that can hold a person captive, because the same people who “have escaped” can be “again entangled in it and overcome.” The word therefore functions as more than a vague description of something unpleasant; it is the concrete object of escape, and then the very thing into which one may be re-caught.

The verse also sets μίασμα in a strong sequence of movement and reversal. First comes escape, and that escape is “through the knowledge of the Lord and Savior Jesus Christ.” Then comes a return described with the imagery of capture: being “again entangled in it.” Finally comes defeat: being “overcome.” Within this chain, μίασμα supplies the negative environment that threatens to reclaim someone. By calling it “the defilement of the world,” the sentence locates the danger in “the world” as a domain characterized by defilement—something from which an exit is possible, but also something to which one can tragically return.

μίασμα also serves the verse’s final evaluative statement: “the last state has become worse for them than the first.” The word helps explain why the latter condition is worse, because the people are not merely in a neutral place of ignorance; they have experienced escape from defilement and then are “again entangled” in that same defilement. The term thus stands at the center of the warning: the reversal is not a minor slip but a re-entry into what had been left behind.

Sense and Usage

The definition “defilement” plays out in this passage as a condition with both moral weight and practical force. μίασμα is not presented as an inner feeling or a private label, but as something that can be escaped, entered, and that can overtake a person. The imagery of escape and re-entanglement suggests that defilement is conceived as something that clings and binds: it is the kind of reality that can wrap around someone and restrict their freedom.

Within the verse’s phrasing, the defilement is specifically “of the world,” and that genitive relationship shapes how the sense is heard. The world is characterized by defilement, and the defilement is connected with the world as its defining feature in this statement. μίασμα, then, functions as a summary term for what makes “the world” spiritually dangerous in the author’s warning. Because it is the thing escaped “through the knowledge of the Lord and Savior Jesus Christ,” it is implied to be incompatible with that knowledge: the knowledge brings release, while defilement brings entanglement and defeat.

The verse also reveals how μίασμα relates to agency and vulnerability. People can “escape” it—suggesting an act or event of deliverance—but they can also be “again entangled in it and overcome,” suggesting a loss of freedom to what they have re-entered. μίασμα therefore fits naturally with verbs of rescue and capture. It provides the negative counterpart to “knowledge”: knowledge is the means of escape; defilement is the realm escaped from, and the snare to which one may return.

Because this word occurs only in a scenario of leaving and returning, its sense is sharpened by contrast. The defilement is what lies on one side of the boundary crossed by escape. The person’s “first” state stands in implicit relation to life within that defilement; the “last” state is worse because it comes after experiencing an exit and then being drawn back into what defiles. The word’s force in this verse is thus bound up with memory and accountability: defilement is not merely the original context but the tragedy of re-entanglement after release.

Imagery

2 Peter 2:20 casts μίασμα in the imagery of contamination and capture at the same time. “Defilement” suggests something that soils, while “entangled” and “overcome” portray it as a binding power that can master someone. The picture is of a person who has gotten free from a defiling realm, only to step back into it and find it tightening around them again—ending not in freedom but in being overcome.

Sources: Lexical data from Strong’s Exhaustive Concordance and the Translators Brief Lexicon of Extended Strongs for Greek (STEPBible, CC BY). Occurrence data from the Translators Amalgamated Greek New Testament (STEPBible, CC BY). Scripture quotations from the World English Bible (public domain).