Exploring the Meaning of Horkizo in Greek

ὁρκίζω means “to adjure,” a forceful form of appeal that binds the speaker’s request to a higher authority. In the New Testament it appears in two scenes: a confrontation between Jesus and an unclean spirit, and a public attempt to wield Jesus’ name in exorcism.

Root and Related Words

ὁρκίζω is derived from horkos (ὅρκος), “oath” (Strong’s G3727). The relationship with “oath” situates the verb in the world of solemn, binding speech—language that aims to compel compliance by invoking a weightier authority than the speaker alone can supply.

Occurrences

Mark 5:7 — “and crying out with a loud voice, he said, “What have I to do with you, Jesus, you Son of the Most High God? I adjure you by God, don’t torment me.””

Here ὁρκίζω is spoken by the voice addressing Jesus, framed by intense emotion: “crying out with a loud voice.” The utterance combines recognition (“Jesus, you Son of the Most High God”) with resistance (“What have I to do with you”) and a plea (“don’t torment me”). The adjuration is the pivot that turns the plea into a constrained demand: “I adjure you by God.” By attaching the request to God as the invoked authority, the speaker attempts to place Jesus under an obligation shaped by that appeal. In the flow of the sentence, the adjuration is not mere decoration; it functions as the argumentative hinge between the confession of Jesus’ identity and the attempted prevention of an outcome (“don’t torment me”). The result is a speech-act meant to restrict what will be done next, using solemn invocation rather than negotiation or persuasion.

Acts 19:13 — “But some of the itinerant Jews, exorcists, took on themselves to invoke over those who had the evil spirits the name of the Lord Jesus, saying, “We adjure you by Jesus whom Paul preaches.””

In Acts 19:13, ὁρκίζω is placed on the lips of “itinerant Jews, exorcists,” and it is embedded in a described technique: they “took on themselves to invoke over those who had the evil spirits the name of the Lord Jesus.” The adjuration is the content of that attempt: “We adjure you by Jesus whom Paul preaches.” The wording makes the adjuration explicitly instrumental—an applied formula directed “over” afflicted persons, aimed at the spirits associated with them. The appeal is mediated through a name (“the name of the Lord Jesus”) and further qualified through association with another messenger (“whom Paul preaches”). In this scene, ὁρκίζω contributes the tone of authoritative command, not as a personal request but as a purportedly binding charge issued in the sphere of spiritual confrontation. The force of the verb is intensified by the plural “We,” suggesting a coordinated attempt, and by the careful phrasing that anchors the command in an invoked authority rather than in the exorcists’ own standing.

Sense and Usage

Across these passages, “to adjure” functions as speech that seeks to compel action by invoking a superior authority as witness and constraint. The verb consistently appears with a “by …” phrase that supplies the invoked power: “by God” (Mark 5:7) and “by Jesus” (Acts 19:13). This repeated pattern shows adjuration operating as more than an earnest request: it is a deliberate attempt to bind the hearer—whether directly addressed (Mark 5:7) or implicitly targeted through an exorcistic command (Acts 19:13)—to comply on the basis of the authority invoked.

Mark 5:7 highlights adjuration as a defensive maneuver. The speaker names Jesus with an exalted title and simultaneously tries to set a boundary: “don’t torment me.” The adjuration supplies leverage of a particular kind: the speaker does not claim equal standing with Jesus but tries to constrain Jesus by appealing to God. In this way, adjuration becomes a tool for attempting to control an interaction that already feels asymmetrical.

Acts 19:13 highlights adjuration as a practiced technique. The exorcists “invoke … the name of the Lord Jesus,” and the adjuration is phrased as a direct command addressed toward the spiritual problem connected with those “who had the evil spirits.” The particular wording, “by Jesus whom Paul preaches,” presents the invoked authority as something they are referencing rather than personally narrating. The verb thereby sits at the intersection of naming, authority, and command: the command is shaped by the authority invoked, and the authority invoked is mediated through recognized proclamation (“whom Paul preaches”).

In both scenes, ὁρκίζω belongs to charged speech in confrontational settings. The verb marks a moment when words are used not simply to communicate information but to impose an obligation—an attempt to make the outcome hinge on the authority named. Because the authority is external to the speaker, adjuration portrays dependence: the speaker’s own capacity is insufficient, so the speech draws strength from the one invoked.

Imagery

The imagery carried by ὁρκίζω in these passages is the sound of urgent, binding words spoken into conflict: a loud cry that tries to forestall torment (Mark 5:7), and a practiced pronouncement spoken “over” the afflicted in an exorcistic setting (Acts 19:13). In both, adjuration is verbal pressure—language that calls on a higher name to compel what the speaker seeks.

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).