### Core Meaning & Semantic Range
The Greek word **τρίζω** (trízō), represented by `{{G5149}}`, is a verb whose base meaning is to creak or squeak. It is used in scripture by analogy to mean the grating of **teeth** in a frenzy, translated as **gnash**. This word is extremely rare, appearing only **1 time** across **1 unique verse** in the entire Bible.
### Biblical Occurrences & Contextual Analysis
The sole biblical appearance of `{{G5149}}` occurs in Mark's narrative of a father describing his son's affliction by an unclean spirit. The father reports that whenever the spirit seizes the boy, it "teareth him... and he foameth, and **gnasheth** with his teeth, and pineth away" [[Mark 9:18]]. The use of **trízō** here is part of a cluster of descriptions that paint a vivid picture of violent convulsions and extreme physical distress, demonstrating the severe torment inflicted by the spirit.
### Related Words & Concepts
Several words used in the immediate context of `{{G5149}}` help to build this picture of intense suffering:
* `{{G4486}}` **rhḗgnymi**: Meaning to "break," "wreck," or "lacerate," and by implication, "to convulse (with spasms)." This describes the violent physical attack the boy endures [[Mark 9:18]].
* `{{G875}}` **aphrízō**: Defined as "to froth at the mouth (in epilepsy)." This word specifies another physical manifestation of the seizure, highlighting the loss of control [[Mark 9:18]].
* `{{G3599}}` **odoús**: The word for "tooth." The grinding of **teeth** is a recurring image of extreme anguish and judgment throughout the Gospels [[Matthew 8:12]].
* `{{G3583}}` **xēraínō**: Meaning "to desiccate" or "wither away." This describes the debilitating, life-draining effect of the recurring affliction on the boy's body [[Mark 9:18]].
### Theological Significance
The thematic significance of `{{G5149}}` is tied entirely to its single, powerful use.
* **Physical Manifestation of Evil:** The word provides a tangible depiction of the consequence of demonic affliction. The act of gnashing is not a choice but a physical torment inflicted upon the victim.
* **A Portrait of Agony:** **Trízō** vividly portrays a state of uncontrollable frenzy and pain. It is one of several physical symptoms that together illustrate the horror of the boy's condition before his healing [[Mark 9:18]].
* **Foreshadowing of Judgment:** While `{{G5149}}` is used once, the closely related action of "gnashing of teeth" (`{{G3599}}`) is a common description of the suffering found in "outer darkness," a state of separation from God [[Luke 13:28]].
### Summary
In summary, `{{G5149}}` is a specific and impactful verb that, in its single biblical context, offers a stark illustration of physical torment. Used to describe the gnashing of teeth during a demonic seizure, it underscores the violent and agonizing nature of such spiritual oppression. Its appearance in [[Mark 9:18]] gives a concrete example of the kind of anguish that is described elsewhere in scripture as a feature of ultimate judgment.
TRV