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G4445

πυρέσσω

pyréssō /poo-res'-so/ Ask about this word
from πυρά
to be on fire, i.e. (specially), to have a fever
be sick of a fever.

Word Study

In depth

A plain-language study of pyréssō — the range of meaning it carries, how Scripture actually uses it, and where it points. Written for readers who don’t know the original language.

Core Meaning & Semantic Range

The Greek word pyréssō, represented by G4445, comes from a root meaning "to be on fire" and is used specifically to describe having a fever. It appears 2 times across 2 unique verses in the Bible. Its use is highly specific, denoting the physical ailment of a high temperature.

Biblical Occurrences & Contextual Analysis

In the biblical narrative, G4445 is used exclusively in the accounts of Jesus healing Simon Peter's mother-in-law. In Matthew's gospel, upon entering Peter's house, Jesus saw his wife's mother "laid, and sick of a fever" Matthew 8:14. Mark's account presents a parallel scene where Simon's wife's mother "lay sick of a fever," and Jesus was immediately told about her condition Mark 1:30. In both instances, the word describes the illness that precedes a miraculous healing.

Related Words & Concepts

Several related words provide a fuller context for the scenes involving G4445:

  • G2621 katákeimai (to lie down, i.e. (by implication) be sick): This word is used in Mark's account to describe how the sick woman lay with a fever, indicating her state of incapacitation Mark 1:30.
  • G3994 pentherá (a wife's mother): This term identifies the specific person afflicted with the fever in both gospels, clarifying her relationship to Simon Peter as his wife's mother (Matthew 8:14, Mark 1:30).
  • G906 bállō (to throw...lay, lie): In Matthew's telling, this word is used to describe how Peter's mother-in-law was laid down by her illness, emphasizing her passive and helpless state Matthew 8:14.

Theological Significance

The significance of G4445 is found in its narrative function as a catalyst for divine intervention.

  • Context for Healing: The state of being "sick of a fever" establishes the specific physical ailment that Jesus immediately addresses, demonstrating His authority over sickness.
  • Occasion for Ministry: The presence of the fever prompts those with Jesus to inform him of the need, setting the stage for his miraculous work Mark 1:30. The illness is not just a detail but the very reason for the subsequent healing.

Summary

In summary, G4445 is a precise term used to describe a fever. Its biblical usage is confined to the singular event of the healing of Peter's mother-in-law. While limited in scope, its importance lies in its ability to clearly define the physical problem that Jesus remedies, providing a straightforward and powerful illustration of his authority over the natural course of illness.

How the KJV Renders It

Translation

Strong’s lists the renderings but not their weight. These are counted from the King James text of the tagged verses — the bar under each is how often the translators actually reached for it. Select one to filter the occurrences below.

Grammatical Forms

Morphology

In the Greek New Testament, this word appears as a verb across 2 occurrences, inflected in 2 grammatical forms — each row is one form, and the bar is how often it is that form.

  • Present Active Participle Accusative Singular Feminine
  • Present Active Participle Nominative Singular Feminine
Nominative
The subject of the verb.
Accusative
The direct object of the verb.
Singular
One.
Feminine
Feminine grammatical gender.
Present
Action in progress or repeated — happening now or continually.
Active
The subject performs the action.
Participle
A verbal adjective — describes while carrying the verb's action.

Related Words

Related

Other entries the study above points to — each one is drawn from a reference it makes. Follow the trail to see how the words connect.

Theographic Context

Context

The people, places, and span of history the verses containing this word touch on — drawn from the theographic tagging of Scripture. Select any name to isolate its verses in the occurrence list.

Biblical Distribution

Distribution

Appears in 2 verses across 2 of the 27 books. Most frequent in Matthew and Mark (1 verse each); never once in the other 25.

1
Matthew
1
Mark

Every Occurrence

Concordance

Every verse where the word is tagged in the King James text. Filter by book, by the English word the translators chose, or search within the verses.

Sources. Definition and numbering: James Strong, Exhaustive Concordance of the Bible (1890). Morphology: STEPBible / Tyndale House (CC BY). Verse tagging: the King James text keyed to Strong’s numbers. Every count on this page is computed from the tagged corpus, not estimated.