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Greek noun (masculine) · G5441

φύλαξ

phylaxfoo'-lax

guard

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

Concordance spelling: phýlax

Word page · Part of the concordance, one page for every word of the Hebrew and Greek text. Strong's G5441is this word's number in James Strong's 1890 index of the King James Bible.

  • 1 of 27
    New Testament books
  • 2
    spellings

The definition in full

Strong's key (1890) · G5441

a watcher or sentry

The King James renders it: keeper.

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

phylax is rendered "guard". It stands 3 times in the Greek text, across one book.

  • Three of the uses stand in Acts, more than in any other book.
  • Its first use in canonical order opens the ledger below.Acts 5:23“We found the jail securely locked, with the guards posted at the doors; but when we opened them, we found no one inside.”
  • The Greek text spells it two different ways.

The first use

“We found the jail securely locked, with the guards posted at the doors; but when we opened them, we found no one inside.”

Acts 5:23φύλακας

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

Where the word stands

Three of the word's three uses are in Acts.

The other 26 New Testament books never use the word.

What the word means

Each meaning, and the words it is translated by

How the Greek text is glossed, word by word

  • guards3

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.

φυλακήphylakeprison/watch: watchUses47
φυλάσσωphylassoto keep/guard: protectUses31
φυλακίζωphylakizoto imprisonUses1
φυλακτήριονphylakterionphylacteryUses1

All 3, in canonical order

Every use, in order

Every use, grouped by book, with its verse.

2 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

  • φύλακας2
  • φύλακές1

The grammar of each form

  • noun · accusative (object) · masculine plural2N-APM
  • noun · nominative (subject) · masculine plural1N-NPM

Acts

three uses
  • “We found the jail securely locked, with the guards posted at the doors; but when we opened them, we found no one inside.”

    Acts 5:23

    • φύλακαςphulakasnoun · accusative (object) · masculine pluraltagged: guards
  • On the night before Herod was to bring him to trial, Peter was sleeping between two soldiers, bound with two chains, with sentries standing guard at the entrance to the prison.

    Acts 12:6

    • φύλακέςphulakesnoun · nominative (subject) · masculine pluraltagged: guards
  • After Herod had searched for him unsuccessfully, he examined the guards and ordered that they be executed. Then he went down from Judea to Caesarea and spent some time there.

    Acts 12:19

    • φύλακαςphulakasnoun · accusative (object) · masculine pluraltagged: guards

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 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 →