ArticleslgStudy

science

Horns of Moses

Horns of Moses is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Horns of Moses rather than just read about it. In short: The Horns of Moses are an iconographic convention common in Latin Christianity whereby Moses was presented as having two horns on his head, later replaced by rays of light. The idea comes from a translation, or mistranslation, of a Hebrew term in Jerome's Latin Vulgate Bible, and many later vernacular translations dependent on that.

Horns of Moses — main illustration
Horns of Moses — illustration

Key takeaways

  • Horns of Moses belongs to science; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Horns of Moses to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Horns of Moses from memory before moving on to harder problems.

Reference excerpt

The Horns of Moses are an iconographic convention common in Latin Christianity whereby Moses was presented as having two horns on his head, later replaced by rays of light. The idea comes from a translation, or mistranslation, of a Hebrew term in Jerome's Latin Vulgate Bible, and many later vernacular translations dependent on that. Moses is said to be "horned", or radiant, or glorified, after he sees God who presents him with the tablets of the law in the Book of Exodus. The use of the term "horned" to describe Moses in fact predates Jerome, and can be traced to the Greek Jewish scholar Aquila of Sinope (fl. 130), whose Greek translations were well known to Jerome. The Hebrew qāran may reflect an allegorical concept of "glorified", or rings of light. Horns tend to have positive associations in the Old Testament, and in ancient Middle Eastern culture more widely, but are associated with negative forces in the Book of Revelation in the New Testament. These considerations may have influenced the translators in their choices, for Aquila as a positive, or for Jerome, as a negative. Moses with horns probably first appears in visual depictions in the eleventh century. These portrayals continue to compete with unhorned depictions of Moses through the medieval and Renaissance periods. Many are clearly positive depictions, as a prophet and precursor to Jesus. Other depictions of Moses, horned and unhorned, are likely to have had antisemitic connotations, especially in the later medieval period, for example, on the Hereford Mappa Mundi. Associations between Jews and devils were established, and a belief that Jews possessed horns developed, including through the badges or hats featuring horns they were mandated to wear; it may have been hard for the images of a horned Moses and the "horned" Jew to have been kept apart in the popular imagination. Horned Moses iconography may have reinforced the idea that Jews have horns.

Michelangelo's horned Moses of c. 1513–1515 comes at the end of the tradition of this depiction, and is generally seen as a positive depiction of the prophet, if containing an animalistic or demonic element. Awareness of flaws in the Vulgate translation spread in the later Middle Ages, and by about 1500 it was realized in scholarly circles that "horned" was a mistranslation. Horns were often replaced by two bunches of rays of light, springing from the same parts of the head, as seen in the 1481–1482 Moses frescoes in the Sistine Chapel or on the 1544 Mosesbrunnen fountain in Bern, Switzerland. These remained common until the 19th century. Artists often ignored the idea that Moses' rays were given to him when he received the tablets of the law, and by the 19th century some images of the infant Moses in scenes of the Finding of Moses feature the rays.

Etymological origin Depictions of a horned Moses stem from the description of Moses' face as "cornuta" ("horned") in the Latin Vulgate translation of the passage found at Exodus chapter 34, specifically verses 29, 30 and 35, in which Moses returns to the people after receiving the commandments for the second time. The Catholic Douay–Rheims Bible (1609) translates the Vulgate as, "And when Moses came down from the Mount Sinai, he held the two tables of the testimony, and he knew not that his face was horned from the conversation of the Lord." This was Jerome's effort to faithfully translate the difficult, original Hebrew text, which uses the term קָרַן, qāran (based on the root, קֶרֶן qeren, which often means "horn"); the term is now interpreted to mean "shining" or "emitting rays" (somewhat like horns). The Anglican King James or Authorised Version of only a few years later has no horns, but a shining face "… when he came down from the mount, that Moses wist not that the skin of his face shone while he talked with him." The usual view in recent centuries has been that Jerome made an outright error, but it has recently been argued that Jerome regarded qeren as a metaphor for "glorified", based on other commentaries he wrote, including one on Ezekiel, where he wrote that Moses' face had "become 'glorified', or as it says in the Hebrew, 'horned'." The use of the term "horned" in fact predates Jerome, and was contained in existing translations he is known to have worked with, especially that of Aquila from Hebrew to Greek; other translations used included the alternative "glorified". Medjuck argues that "horned" is a metaphorical or allegorical concept relating to glory in both Jerome's translation and Jewish tradition, which Jerome was familiar with.

Another interpretation was that qeren also represented 'rings of light' as when Moses became enlightened after his journey. The Greek Septuagint, which Jerome also had available, translated the verse as "Moses knew not that the appearance of the skin of his face was glorified." Medieval theologians and scholars believed that Jerome had intended to express a glorification of Moses' face, by his use of the Latin word for "horned." The understanding that the original Hebrew was difficult and was not likely to actually mean "horns" developed during the Renaissance. The cultural historian Stephen Bertman argues that Jerome is known himself to have held antisemitic views, and may have made the choice to associate Moses with "horns" consciously for theological reasons. Bertman argues that for Aquila, as a Jew, "horns" as presented in the Old Testament, would have generally positive associations, but that Jerome could have expected his readers to have in mind the New Testament association of horns with dragons, wild beasts and the antichrist in Revelation. Given that Moses was the holder of the old, now replaced, law, it may have been preferable to Jerome to portray him in a negative light. Furthermore, implying that Moses' face was "glorified" would imply an association with Jesus, and place the Old Law on a parallel with the new. Thus Bertman concludes Jerome may simply have been acting on his own biases and theological preferences.

In medieval art

… excerpt ends here. Continue reading the full article.

Illustrations

Horns of Moses: Italian fresco, c. 1500
Italian fresco, c. 1500
Horns of Moses: Moses receiving the Ten Commandments, Nuremberg Chronicles, 1493, woodcut with colour
Moses receiving the Ten Commandments, Nuremberg Chronicles, 1493, woodcut with colour
Horns of Moses: Michelangelo's Moses, detail of the horned head
Michelangelo's Moses, detail of the horned head
Horns of Moses: Moses with horns, with the Golden Calf, in a 13th-century illuminated manuscript, by William de Brailes
Moses with horns, with the Golden Calf, in a 13th-century illuminated manuscript, by William de Brailes
Horns of Moses: Moses strikes the rock, 1350-1375, Fulda MS of the World Chronicle by Rudolf von Ems
Moses strikes the rock, 1350-1375, Fulda MS of the World Chronicle by Rudolf von Ems

Worked examples

Example 1 — a first encounter with Horns of Moses

Start with the simplest possible case. Write down what Horns of Moses claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Horns of Moses before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Horns of Moses ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Horns of Moses

In research
Horns of Moses appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Horns of Moses in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Horns of Moses is common in secondary-school and first-year university syllabi. It links to neighbouring topics Antisemitism in art, Christian iconography, Cultural depictions of Moses, so understanding it makes those chapters shorter.
In everyday life
Look for Horns of Moses outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.
Ask Teacher Smith questions about this articleOpens your AI tutor with a question about “Horns of Moses” →

Affiliate

Preply — study more efficiently by working with a personal tutor. 50% off.

How to study Horns of Moses in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Horns of Moses means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Horns of Moses out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Horns of Moses in simple terms?

The Horns of Moses are an iconographic convention common in Latin Christianity whereby Moses was presented as having two horns on his head, later replaced by rays of light. The idea comes from a translation, or mistranslation, of a Hebrew term in Jerome's Latin Vulgate Bible, and many later vernacu…

Why does Horns of Moses matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Horns of Moses?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Horns of Moses.

Tags

  • Antisemitism in art
  • Christian iconography
  • Cultural depictions of Moses
  • History of translation
  • Linguistic error
  • Mistranslation
  • Vulgate

Keep exploring