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Greek adjective · G2513

καθαρός

katharoskath-ar-os'

Physically; Ceremonially; Ethically

27 uses in the Greek text, one for each word STEP Bible has tagged with this key

Concordance spelling: katharós

Word page · Part of the concordance, one page for every word of the Hebrew and Greek text. Strong's G2513is this word's number in James Strong's 1890 index of the King James Bible.

  • 12 of 27
    New Testament books
  • 12
    spellings
  • 3
    meanings

The definition in full

Strong's key (1890) · G2513

clean (literally or figuratively)

The King James renders it: clean, clear, pure.

James Strong, The Exhaustive Concordance of the Bible (1890), public domain. Strong indexed the King James text, and this site quotes his entry as that index.

Summary

katharos is rendered "Physically; Ceremonially; Ethically". It stands 27 times in the Greek text, across twelve books.

  • Six of the uses stand in Revelation, more than in any other book.
  • The lexicon lists three meanings for it, beginning with "Physically".
  • Its first use in canonical order opens the ledger below.Matthew 5:8Blessed are the pure in heart, for they will see God.
  • The Greek text spells it twelve different ways.

The first use

Blessed are the pure in heart, for they will see God.

Matthew 5:8καθαροὶ

The first use, in the order of the New Testament's books.

Where the word stands

The word stands in twelve of the 27 New Testament books.

The other 15 New Testament books never use the word.

What the word means

The word carries three meanings: Physically, and Ceremonially, and Ethically.

Each meaning, and the words it is translated by

The English STEP Bible gives each use, word by word, and how many times.
PhysicallyMat.23:26 27:59Tagged as
  • pure12
  • clean9
  • a pure2
  • clear2
  • purity1
WhereMatthew 23:26Blind Pharisee! First clean the inside of the cup and dish…
CeremoniallyLuk.11:41, Rom.14:20, Tit.1:15.Tagged aslisted under the tableWhereLuke 11:41But give as alms the things that are within you…
Ethically__(a) of personsTagged as
  • innocent1
WhereMatthew 5:8Blessed are the pure in heart, for they will see God.

The words built on the same word-part

Each word below begins with the same letters this one begins with. A shared word-part shows a family. It does not settle what any one of them means, so each word carries its own uses on its own page. Scholars call that shared part the stem.

καθαρίζωkatharizoto cleanUses31
καθάπερkathaperjust asUses13
καθαιρέωkathaireoto take downUses8
καθαρισμόςkatharismoscleansingUses7
καθαίρεσιςkathairesisdestructionUses3
καθάkathaas/just asUses1
καθαίρωkathairoto pruneUses1
καθάπτωkathaptoto attachUses1
καθαρότηςkatharotescleannessUses1

The words it stands beside

All 27, in canonical order

Every use, in order

Every use, grouped by book, with its verse.

12 spellings and their grammar

STEP Bible tags every word of the Hebrew and Greek text with its spelling and its grammar. Both lists below count the rows printed underneath, written out in English, with the code beside each one as it was tagged.

How it is spelled

  • καθαρὰ4
  • καθαρᾷ3
  • καθαρᾶς3
  • καθαροί3
  • καθαρόν3
  • καθαρὸν3
  • καθαρὸς2
  • καθαρῷ2
  • καθαροὶ1
  • καθαροῖς1
  • καθαρόν.¶1
  • καθαρός1

The grammar of each form

  • adjective · nominative (subject) · masculine plural4A-NPM
  • adjective · nominative (subject) · neuter singular4A-NSN
  • adjective · accusative (object) · neuter singular3A-ASN
  • adjective · dative (“to / for”) · feminine singular3A-DSF
  • adjective · genitive (“of”) · feminine singular3A-GSF
  • adjective · nominative (subject) · neuter plural3A-NPN
  • adjective · nominative (subject) · masculine singular3A-NSM
  • adjective · dative (“to / for”) · masculine plural1A-DPM
  • adjective · dative (“to / for”) · masculine singular1A-DSM
  • adjective · dative (“to / for”) · neuter singular1A-DSN
  • adjective · nominative (subject) · feminine singular1A-NSF

Matthew

three uses
  • Blessed are the pure in heart, for they will see God.

    Matthew 5:8

    • καθαροὶkatharoiadjective · nominative (subject) · masculine pluraltagged: pure
  • Blind Pharisee! First clean the inside of the cup and dish, so that the outside may become clean as well.

    Matthew 23:26

    • καθαρόν.¶katharonadjective · nominative (subject) · neuter singulartagged: clean
  • So Joseph took the body, wrapped it in a clean linen cloth,

    Matthew 27:59

    • καθαρᾷkatharaadjective · dative (“to / for”) · feminine singulartagged: clean

Luke

one use
  • But give as alms the things that are within you, and you will see that everything is clean for you.

    Luke 11:41

    • καθαρὰkatharaadjective · nominative (subject) · neuter pluraltagged: clean

John

four uses
  • Jesus told him, “Whoever has already bathed needs only to wash his feet, and he will be completely clean. And you are clean, though not all of you.”

    John 13:10

    • καθαρὸςkatharosadjective · nominative (subject) · masculine singulartagged: clean
    • καθαροίkatharoiadjective · nominative (subject) · masculine pluraltagged: clean
  • For He knew who would betray Him. That is why He said, “Not all of you are clean.”

    John 13:11

    • καθαροίkatharoiadjective · nominative (subject) · masculine pluraltagged: clean
  • You are already clean because of the word I have spoken to you.

    John 15:3

    • καθαροίkatharoiadjective · nominative (subject) · masculine pluraltagged: clean

Acts

two uses
  • But when they opposed and insulted him, he shook out his garments and told them, “Your blood be on your own heads! I am innocent of it. From now on I will go to the Gentiles.”

    Acts 18:6

    • καθαρὸςkatharosadjective · nominative (subject) · masculine singulartagged: clean
  • Therefore I testify to you this day that I am innocent of the blood of all men.

    Acts 20:26

    • καθαρόςkatharosadjective · nominative (subject) · masculine singulartagged: innocent

Romans

one use
  • Do not destroy the work of God for the sake of food. All food is clean, but it is wrong for a man to let his eating be a stumbling block.

    Romans 14:20

    • καθαρὰkatharaadjective · nominative (subject) · neuter pluraltagged: clean

1 Timothy

two uses
  • The goal of our instruction is the love that comes from a pure heart, a clear conscience, and a sincere faith.

    1 Timothy 1:5

    • καθαρᾶςkatharasadjective · genitive (“of”) · feminine singulartagged: a pure
  • They must hold to the mystery of the faith with a clear conscience.

    1 Timothy 3:9

    • καθαρᾷkatharaadjective · dative (“to / for”) · feminine singulartagged: clear

2 Timothy

two uses
  • I thank God, whom I serve with a clear conscience as did my forefathers, as I constantly remember you night and day in my prayers.

    2 Timothy 1:3

    • καθαρᾷkatharaadjective · dative (“to / for”) · feminine singulartagged: a pure
  • Flee from youthful passions and pursue righteousness, faith, love, and peace, together with those who call on the Lord out of a pure heart.

    2 Timothy 2:22

    • καθαρᾶςkatharasadjective · genitive (“of”) · feminine singulartagged: pure

Titus

three uses
  • To the pure, all things are pure; but to the defiled and unbelieving, nothing is pure. Indeed, both their minds and their consciences are defiled.

    Titus 1:15

    • καθαρὰkatharaadjective · nominative (subject) · neuter pluraltagged: pure
    • καθαροῖςkatharoisadjective · dative (“to / for”) · masculine pluraltagged: pure
    • καθαρόνkatharonadjective · nominative (subject) · neuter singulartagged: pure

Hebrews

one use
  • let us draw near with a sincere heart in full assurance of faith, having our hearts sprinkled to cleanse us from a guilty conscience and our bodies washed with pure water.

    Hebrews 10:22

    • καθαρῷkatharoadjective · dative (“to / for”) · neuter singulartagged: pure

James

one use
  • Pure and undefiled religion before our God and Father is this: to care for orphans and widows in their distress, and to keep oneself from being polluted by the world.

    James 1:27

    • καθαρὰkatharaadjective · nominative (subject) · feminine singulartagged: pure

1 Peter

one use
  • Since you have purified your souls by obedience to the truth so that you have a genuine love for your brothers, love one another deeply, from a pure heart.

    1 Peter 1:22

    • καθαρᾶςkatharasadjective · genitive (“of”) · feminine singulartagged: purity

Revelation

six uses
  • And out of the temple came the seven angels with the seven plagues, dressed in clean and bright linen and girded with golden sashes around their chests.

    Revelation 15:6

    • καθαρὸνkatharonadjective · accusative (object) · neuter singulartagged: pure
  • She was given clothing of fine linen, bright and pure.” For the fine linen she wears is the righteous acts of the saints.

    Revelation 19:8

    • καθαρόνkatharonadjective · accusative (object) · neuter singulartagged: pure
  • The armies of heaven, dressed in fine linen, white and pure, follow Him on white horses.

    Revelation 19:14

    • καθαρόνkatharonadjective · accusative (object) · neuter singulartagged: pure
  • The wall was made of jasper, and the city itself of pure gold, as pure as glass.

    Revelation 21:18

    • καθαρὸνkatharonadjective · nominative (subject) · neuter singulartagged: pure
    • καθαρῷkatharoadjective · dative (“to / for”) · masculine singulartagged: clear
  • And the twelve gates were twelve pearls, with each gate consisting of a single pearl. The main street of the city was pure gold, as clear as glass.

    Revelation 21:21

    • καθαρὸνkatharonadjective · nominative (subject) · neuter singulartagged: pure

Where it leads

How the numbers are counted

Every count on this page comes from STEP Bible's tagged Hebrew and Greek text, the same text the ledger prints. A use is counted once each time the tagging marks a word with this key.

Spellings are counted as the Greek text spells them, with the sentence's own punctuation taken off the word first, so a form that ends a clause is not counted as a second spelling.

The words it stands beside are the nouns, verbs and adjectives immediately before or after it, counted in every verse where the word stands. The article, the conjunctions and the prepositions are left out, because they stand beside every word.

The family is read from the lexicon by the stem the two words share, with the accents off, and a person or a place named on the stem is left out.

Hebrew and Greek text, word tagging and grammar: STEP Bible (www.STEPBible.org), Tyndale House, CC BY 4.0. Their grammar codes are written out in English here and shown as tagged beside each one.

Meaning and senses: STEP Bible TBESG (Tyndale House, CC BY 4.0), the Brief lexicon based on Abbott-Smith (1922).

Dictionary key: Strong's Exhaustive Concordance of the Bible (1890, public domain). English verse text: Berean Standard Bible (public domain, 2023).

Revised 2026-09-05. Every cited work, the sources registry →