Exploring the Meaning of Ektinasso in Greek

ἐκτινάσσω expresses the act of shaking something out or off. In the passages where it appears, the action is used for removing dust from feet or for shaking out clothing in the face of rejection and opposition.

Root and Related Words

ἐκτινάσσω is associated with the preposition ek (ἐκ), meaning “out from” (Strong’s G1537), which fits the pictured motion of driving something outward by shaking.

Occurrences

Matthew 10:14 — “Whoever doesn’t receive you, nor hear your words, as you go out of that house or that city, shake the dust off your feet.”

Here ἐκτινάσσω is an instructed gesture performed as the messengers leave a “house” or “city” that refuses both their presence (“doesn’t receive you”) and their message (“nor hear your words”). The object being removed is “the dust,” and the body part specified is “your feet,” making the action concrete and visible. The timing matters: it is done “as you go out,” so the shaking accompanies departure and marks a clean break from the place that refused the words spoken there.

Mark 6:11 — “Whoever will not receive you nor hear you, as you depart from there, shake off the dust that is under your feet for a testimony against them. Assuredly, I tell you, it will be more tolerable for Sodom and Gomorrah in the day of judgment than for that city!”

Mark places the same physical action within a stated purpose: “for a testimony against them.” ἐκτινάσσω is still the removal of dust, but Mark describes it with extra specificity—“the dust that is under your feet”—emphasizing how little and how ordinary the material is. The gesture becomes a witness-act bound to the departure (“as you depart from there”), and the verse frames it in judicial language: the shaken-off dust stands as “testimony,” and the rejection is weighed in “the day of judgment.” The shaking, though small in effort, is presented as a public sign that the refusal to “receive” and “hear” has consequences.

Acts 13:51 — “But they shook off the dust of their feet against them, and came to Iconium.”

In Acts 13, ἐκτινάσσω is narrated rather than commanded. The missionaries respond to opposition by doing what the earlier instruction described: they “shook off the dust of their feet.” The phrase “against them” gives the action a directed force; it is not merely self-cleaning but a deliberate gesture aimed toward those who opposed them. Immediately afterward they move on—“and came to Iconium”—so the shaking functions as a boundary-marker between one field of work and the next. The dust belongs to “their feet,” so the gesture is still grounded in travel and contact with a place.

Acts 18:6 — “When they opposed him and blasphemed, he shook out his clothing and said to them, “Your blood be on your own heads! I am clean. From now on, I will go to the Gentiles!””

This occurrence shifts the object: instead of dust from feet, Paul “shook out his clothing.” The context is sharper conflict: “they opposed him and blasphemed.” The action occurs right before a spoken declaration that interprets the gesture: “Your blood be on your own heads! I am clean.” The shaking-out of clothing thus accompanies an announcement of separation and responsibility, and it precedes a change of direction in ministry: “From now on, I will go to the Gentiles!” The clothing, like feet, is something that carries contact with a place and its people; shaking it out signals a decisive disengagement in response to active resistance.

Sense and Usage

Across these four scenes, ἐκτινάσσω consistently depicts a brisk outward motion that removes an unwanted remnant—dust beneath feet or whatever clings to clothing. The settings show that the act is not performed in private but in the presence of those who have rejected the message or the messenger: those who “don’t receive” and “nor hear,” those who “will not receive” and “nor hear,” those toward whom the act is done “against them,” and those who “opposed him and blasphemed.” In each case the physical removal serves as a visible punctuation at the moment of departure or turning.

The repeated linkage with leaving is especially strong. Matthew and Mark set the action “as you go out” or “as you depart,” Acts 13 places it immediately before travel to another city, and Acts 18 pairs it with a verbal turning point—“From now on”—and a new audience. The word’s imagery fits these transitions: shaking out/off clears away residue from contact with a place and signals that the messenger is moving forward without carrying that place’s dust or stain along.

Two of the occurrences also spell out the gesture’s communicative weight. Mark calls it “a testimony against them,” making the shaking an enacted statement. Acts 18 includes Paul’s explanation, “I am clean,” and the solemn charge, “Your blood be on your own heads!”—language that treats the break as morally serious. Thus, while ἐκτινάσσω names a simple bodily action, in these passages it functions as a sign-act that embodies a response to refusal and opposition: the messenger departs, the contact is shaken away, and the responsibility for the rejection is laid where it belongs.

Imagery

The word evokes the gritty realism of travel—dust under feet—and the everyday fabric of life—clothing that can be shaken out. In these texts, that common material becomes the medium of a public boundary: what clings is shaken away at the threshold of departure, and the gesture stands beside strong language about “testimony,” “judgment,” and being “clean.”

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).