How to Say Holy in Hebrew: Kadosh (קָדוֹשׁ)

There's a moment in Isaiah 6 that stops you cold. The prophet has just watched King Uzziah die. The throne of Judah is empty. And then — the temple doors swing open on a vision that isn't meant for human eyes. Isaiah sees the Lord seated on a throne, high and exalted. The hem of His robe fills the temple. Seraphim stand above Him, each with six wings: two covering their faces, two covering their feet, two for flying. And they're crying out to one another. The sound shakes the doorposts. Smoke fills the house.

קָדוֹשׁ קָדוֹשׁ קָדוֹשׁ יְהוָה צְבָאוֹת

Kadosh, kadosh, kadosh Adonai Tzevaot.

Holy, holy, holy is the LORD of hosts.

That's the Hebrew word for holy: קָדוֹשׁ (kadosh). Pronounced kah-DOHSH — two syllables, with the weight on the second. Say it slowly: kah … DOHSH. The "sh" at the end is like the beginning of "shoe." It's one of the most important words in Scripture, and most of us have been misunderstanding it for years.

What Kadosh Really Means

Here's what trips people up: we hear "holy" and we think morally perfect. Clean. Pure. Untouched by sin. And while that's part of the picture, it's not the heart of it. The root of kadosh is ק.ד.שׁ (q.d.sh), and the core meaning is set apart. Distinct. Other. Something that belongs to a different category entirely.

When God is kadosh, He isn't just saying He's good. He's saying He's utterly unlike everything He made. He stands in a class by Himself. Creation is here; He is there. The ordinary is here; the holy is there. That's why the seraphim cover their faces in Isaiah 6 — they're in the presence of Someone who cannot be compared to anything else.

And when God tells His people, "You shall be holy, for I the LORD your God am holy" (Leviticus 19:2), He's not demanding moral perfection in the abstract. He's calling them to be set apart — distinct from the nations around them, dedicated to His purposes, belonging to Him in a way that marks every part of their life. Holiness is identity before it's behavior. You can explore this more on our kadosh word page.

The Isaiah 6 Moment

Back to that temple. The seraphim aren't whispering. They're crying out — calling to one another across the throne room. The Hebrew suggests a kind of antiphonal chant, one voice answering another: Kadosh! — Kadosh! — Kadosh! In Hebrew, repeating a word three times is the superlative. It's how the language says "the most" or "infinitely." God isn't merely holy. He is holy to the highest possible degree.

And then the second line: "The whole earth is full of his glory." The same vision that reveals God's radical otherness also declares that His presence fills creation. The kadosh One is not distant. His glory spills into every corner of the earth.

That cry — Kadosh, Kadosh, Kadosh — has never stopped. It entered Jewish liturgy as the Kedushah prayer, recited three times daily. It became the Sanctus in Christian worship. For thousands of years, worshippers have risen on their toes with each "Kadosh," reaching upward like the seraphim. The angels are still saying it. So are we.

Holy Ground, Holy People

Before Isaiah, there was Moses. A bush burning and not consumed. A voice from the flame: "Take off your sandals, for the place where you are standing is holy ground" (Exodus 3:5). The ground wasn't inherently sacred. It became kadosh because God's presence was there. He had set it apart — drawn a line between that patch of desert and every other patch. Ordinary dirt, suddenly in a different category.

Moses couldn't approach as if it were any other place. He had to recognize the boundary. That's what kadosh does: it creates boundaries — not to punish, but to mark what belongs to God. Aaron, the first high priest, was kadash-ed: set apart for service. God didn't make him morally perfect. He set him apart. Put him in a different category: this man belongs to Me.

So when you say "holy" in Hebrew, you're not just swapping one word for another. Kadosh refuses to let holiness be a vague religious feeling. It insists: this is about distinctness. About being set apart. About belonging to God in a way that marks you. The seraphim are still crying it. The temple shook then; it echoes now. And somewhere in that sound is an invitation: Be holy, for I am holy. Not "be perfect." Be set apart. Be Mine.

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Want to go deeper? Our kadosh word page has the full pronunciation breakdown, related words from the same root, and more Scripture. And if you've ever wondered about the phrase the angels never stop saying, explore Holy, Holy, Holy in Hebrew.