Exploring the Meaning of Erion in Greek

ἔριον refers to wool. In the New Testament it appears in ritual description and in visionary portraiture, each time drawing on wool’s concrete texture and color to make a point in context.

Occurrences

“For when every commandment had been spoken by Moses to all the people according to the law, he took the blood of the calves and the goats, with water and scarlet wool and hyssop, and sprinkled both the book itself and all the people,” (Hebrews 9:19)

Here ἔριον occurs in a list of tangible items handled in a covenant-making setting: blood, water, scarlet wool, and hyssop. The verse presents these as objects Moses “took” and then used when he “sprinkled both the book itself and all the people.” Wool contributes as part of the practical means by which the sprinkling is carried out. The adjective “scarlet” attaches to the wool, highlighting that the wool is specifically dyed or colored, and therefore visually conspicuous among the items named. In the sentence’s movement from spoken “commandment” to enacted sprinkling, ἔριον stands with other physical materials that translate words “according to the law” into a public, visible action affecting both the “book itself” and “all the people.”

The placement of ἔριον between “water” and “hyssop” also keeps the focus on implement and procedure. The verse does not treat wool as clothing or commodity but as a material incorporated into the rite’s performance. Because the object is specified as “scarlet wool,” the wool’s natural characteristics—its fibrous, absorbent nature and its capacity to take color—fit the scene’s emphasis on taking and sprinkling. The word thus belongs to the concrete inventory that lends the account its sensory realism: things can be gathered, held, and applied, and the ritual’s effect is conveyed through contact with a material medium.

“His head and his hair were white as white wool, like snow. His eyes were like a flame of fire.” (Revelation 1:14)

In this vision, ἔριον functions as a comparison: “white as white wool, like snow.” Wool is invoked for its recognizable appearance, especially its whiteness, and it stands alongside “snow” to intensify the description. The phrase “His head and his hair” identifies the part of the figure being described, and the simile draws the reader’s attention to color and brightness rather than to touch or use. Wool here is not an implement or ingredient but an image—a familiar, earthy material used to communicate the striking visual purity of the figure’s hair.

The immediate context adds contrast and energy: “His eyes were like a flame of fire.” Wool and snow contribute to the portrayal of whiteness and brilliance, while the flame image contributes heat and intensity. In that pairing, ἔριον supports the scene’s vividness by anchoring the vision in an everyday material that can be mentally pictured with clarity. The doubling “white as white wool” presses the description toward an emphatic superlative effect, and wool’s association with a soft, pale mass makes it a fitting comparator for hair, which similarly forms a visible covering.

Sense and Usage

Across these two passages ἔριον consistently denotes wool as a concrete substance, but the contexts place the same material into two distinct communicative roles: an item used in a ritual action (Hebrews) and an element of visual description (Revelation). This shows that the word’s value in discourse lies not in abstraction but in its physical properties as readily imagined by hearers: wool can be handled as a material and recognized as a color reference.

In Hebrews 9:19 wool is integrated into a chain of coordinated nouns (“blood… water… scarlet wool and hyssop”), indicating that it belongs to the set of materials brought together for a specific procedure. The mention of “scarlet” narrows the portrayal to wool as a prepared material, selected for its appearance within a solemn act. The action verbs frame the wool’s function: Moses “took” these items, then “sprinkled” with them. Within that wording, wool is not foregrounded as the central agent but as part of the practical ensemble that enables the sprinkling to be performed upon multiple targets (“the book itself and all the people”). The sense of ἔριον here is grounded in wool’s materiality as something one can carry and employ in a rite.

In Revelation 1:14 the same noun shifts to figurative comparison. The text does not say the figure wears wool; rather, it says the head and hair are “white as white wool.” Wool’s role is to provide a clear reference point for whiteness that is both natural and striking. By adding “like snow,” the verse doubles the comparison, suggesting that wool alone is a strong but not exclusive image for the brightness envisioned. Wool and snow are different materials, yet both serve the same descriptive end: communicating the intensity of whiteness. In that scene, ἔριον helps create a visual register for the reader, making the visionary description more immediate by appealing to a familiar sight.

Read together, the occurrences show that ἔριον can carry weight either because it is useful in a physical action or because it is evocative in an image. The Hebrews use depends on wool as a manipulable, selected material placed within a lawful procedure; the Revelation use depends on wool as an easily visualized, pale reference used to depict extraordinary whiteness. In both, the word remains anchored to the concrete object, and the surrounding modifiers and comparisons determine what aspect of wool is being drawn into focus—its colored presence in a list of implements, or its whiteness as a descriptive benchmark.

Imagery

The two texts set wool into markedly different atmospheres: a scene of enacted covenantal sprinkling and a scene of radiant vision. In Hebrews 9:19 “scarlet wool” belongs to the tactile world of taking, sprinkling, book, and people; it intensifies the scene’s visibility by naming a colored material among the instruments of the rite. In Revelation 1:14 “white wool” (paired with “snow”) heightens the vision’s brightness and contrasts with “a flame of fire” in the eyes, so that wool becomes part of a composite portrait in which color and intensity communicate what ordinary description cannot fully contain.

Attested Forms

ἔριον (Erion), pronounced er’-ee-on, is a Greek noun, neuter, meaning “wool.”

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).