Exploring the Meaning of Sparasso in Greek
σπαράσσω means “to convulse,” appearing three times in Scripture: Mark 1:26; Mark 9:26; Luke 9:39.
Mark’s Scenes
In Mark 1:26 and 9:26, an unclean spirit convulses a person as it comes out. Mark 9:26 adds that the boy became like one dead.
Learn More →Luke’s Scene
In Luke 9:39, a spirit convulses a boy so that he foams. The spirit hardly departs from him.
Learn More →σπαράσσω expresses the idea of convulsing, used in Gospel narratives where an afflicted person is violently shaken in the presence and action of a spirit. It appears in three scenes that describe sudden, visible bodily disturbance and its aftermath.

Occurrences
Mark 1:26 — “The unclean spirit, convulsing him and crying with a loud voice, came out of him.”
Here σπαράσσω describes what the unclean spirit does to the man at the moment of departure. The convulsing is paired with “crying with a loud voice,” presenting a single, concentrated outburst that marks the spirit’s exit. The verb contributes a physical, observable dimension to the event: the spirit’s going out is not portrayed as quiet or merely internal, but as accompanied by a disruptive seizure-like shaking that onlookers could register. In the sentence, the convulsing functions as an action of the unclean spirit rather than of the man himself, framing the bodily violence as something inflicted during the final moments before release.

Mark 9:26 — “After crying out and convulsing him greatly, it came out of him. The boy became like one dead, so much that most of them said, “He is dead.””
In this account, σπαράσσω is intensified: “convulsing him greatly.” The convulsion is again joined to a cry (“After crying out…”), and it immediately precedes the spirit’s departure (“it came out of him”). The narrative then lingers on the result in the boy’s appearance: “The boy became like one dead,” provoking the crowd’s conclusion, “He is dead.” The verb therefore sits at the hinge between conflict and outcome. It depicts the bodily crisis that accompanies the spirit’s exit and helps explain why the aftermath looks so severe. The convulsing is not an incidental detail; it shapes the scene’s tension by making the release momentarily resemble death, at least in the perception of “most of them.”
Luke 9:39 — “Behold, a spirit takes him, he suddenly cries out, and it convulses him so that he foams, and it hardly departs from him, bruising him severely.”
Luke places σπαράσσω within a fuller chain of actions and effects. The spirit “takes him,” the child “suddenly cries out,” and then the spirit “convulses him so that he foams.” The convulsion is thus connected to a vivid symptom (“he foams”), suggesting a violent shaking that produces visible distress. The line “it hardly departs from him” adds duration and resistance: the convulsing is not confined to a single instant but belongs to a pattern in which the spirit clings and the child remains under assault. The final phrase, “bruising him severely,” frames the convulsing as injurious, leaving damage in its wake. In this setting, the verb contributes to a description of repeated, punishing bodily upheaval tied to the spirit’s oppressive hold.

Sense and Usage
Across these passages, σπαράσσω consistently portrays convulsing as an external force acting upon a person. The subject performing the action is not the afflicted individual but the spirit: “The unclean spirit, convulsing him…” (Mark 1:26); “convulsing him greatly” before it departs (Mark 9:26); “it convulses him so that he foams” (Luke 9:39). This repeated grammar keeps the focus on the affliction as an imposed violence rather than a voluntary movement or an inward feeling. The verb therefore helps narrate the experience as something done to the body, something that interrupts normal control and composure.
The scenes also show σπαράσσω operating at two narrative moments: (1) as a sign of a spirit’s ongoing domination and harm, and (2) as part of the crisis that accompanies the spirit’s exit. Luke’s line “it hardly departs from him, bruising him severely” places the convulsing within a continuing pattern of oppression, where the spirit’s presence is measured by recurring bodily upheaval and the injuries it causes. Mark 1:26 and Mark 9:26, by contrast, use the convulsing at the moment of departure. In both, convulsing is paired with a cry and directly linked to “came out of him.” The effect is to portray release not as gentle but as contested: the spirit’s leaving is marked by a final spasm.
Intensity is communicated in the immediate modifiers and consequences surrounding the verb. Mark 9:26 adds “greatly,” and the aftermath is so drastic that “most of them said, ‘He is dead.’” In Luke 9:39, the convulsing is described with an explicit bodily result (“so that he foams”) and an explicit injury (“bruising him severely”). Even where no bodily aftermath is spelled out (Mark 1:26), the convulsing is still coupled with “crying with a loud voice,” which supplies an audible counterpart to the visible shaking. In each case, σπαράσσω serves the narrative by making affliction and conflict legible through the body: convulsing, crying out, foaming, bruising, and the appearance of death.
Because the verb is used in scenes of spiritual assault, it carries an imagery of sudden disruption. Luke’s “he suddenly cries out” sets the action in the register of abrupt onset, and Mark’s repeated pairing with crying underscores the involuntary, eruptive character of the event. The convulsing is not presented as a private sensation but as a public manifestation that elicits responses: a loud voice heard, foam seen, bruises endured, and a crowd’s fearful verdict, “He is dead.” The word’s contribution is therefore both physical and communicative: it signals, to witnesses within the story, the severity of what is happening.
In these contexts, σπαράσσω also sits beside verbs of control and release: a spirit “takes” (Luke 9:39) and later “departs,” whether with difficulty (“hardly departs from him”) or at a decisive moment (“came out of him”). The convulsing belongs to that struggle over the person’s body—an action that accompanies taking, resists departure, and in Mark accompanies the final leaving. Thus, within these narratives, the verb marks the body as the immediate arena where the spirit’s violence is displayed and where its exit is dramatically registered.
Imagery
The imagery attached to σπαράσσω in these verses is starkly bodily: a person shaken, a cry breaking out, foam at the mouth, bruising, and the stillness that looks like death. Mark 9:26 concentrates that imagery into a climactic moment—convulsing so severe that observers think life has ended—while Luke 9:39 stretches it into an ongoing ordeal that “hardly” lets go. Together these scenes portray convulsing as a violent, visible upheaval that signals the presence and action of a spirit and shapes how the surrounding people interpret what they see.
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).




