Skip to content
G3638

ὀκτώ

oktṓ /ok-to'/ Ask about this word
a primary numeral; "eight"
eight.

Word Study

In depth

A plain-language study of oktṓ — 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 oktṓ, represented by G3638, is a primary numeral meaning "eight". It appears 9 times across 9 unique verses in the Bible. Its function is straightforward, providing a specific numerical quantity in various contexts, from counting days and years to people.

Biblical Occurrences & Contextual Analysis

In biblical narratives, G3638 is used to specify precise durations and quantities. It marks the time for the circumcision of Jesus as eight days after his birth Luke 2:21. It is also used to quantify periods of suffering, such as the man named Aeneas who had been sick of the palsy and kept his bed for eight years Acts 9:33. In the account of the flood, the word specifies that eight souls were saved in the ark with Noah 1 Peter 3:20. Similarly, it marks the time between Jesus' sayings and the Transfiguration, which occurred "about an eight days after" Luke 9:28.

Related Words & Concepts

The numeral G3638 is also used in combination with other numbers to form larger figures. These related words help establish specific timeframes for suffering or tragedy:

  • G1176 déka (ten): This word for "ten" is combined with G3638 to describe the "eighteen" years of infirmity for the woman who was bowed together (Luke 13:11, Luke 13:16) and the "eighteen" people on whom the tower in Siloam fell Luke 13:4.
  • G5144 triákonta (thirty): This term for "thirty" is joined with G3638 to describe the man with an infirmity for "thirty and eight years" who was waiting by the pool John 5:5.

Theological Significance

While a simple number, G3638 often provides the context for significant events and divine action.

  • Marking New Beginnings: The use of eight days is notably linked to Jesus' circumcision, a foundational covenant act Luke 2:21. It also marks the time before a key post-resurrection appearance to the disciples, including Thomas John 20:26.
  • Defining Periods of Waiting and Suffering: The number consistently quantifies the long duration of affliction before a moment of healing or deliverance, as seen with the man paralyzed for eight years Acts 9:33 and others suffering for eighteen or thirty-eight years.
  • Highlighting Divine Salvation: The term is used to count the exact number of people God saved from the flood, emphasizing the specific and complete nature of this rescue ("eight souls were saved," 1 Peter 3:20).

Summary

In summary, G3638 is a precise numeral that adds crucial detail and weight to biblical accounts. While its primary meaning is simply "eight", it consistently appears in contexts that frame significant religious rites, long periods of human suffering, and pivotal moments of divine intervention. It gives specificity to events like the Transfiguration Luke 9:28, healings, and the salvation of Noah's family 1 Peter 3:20, grounding these profound narratives in concrete, quantifiable terms.

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 an adjective across 7 occurrences, inflected in 1 grammatical form — each row is one form, and the bar is how often it is that form.

  • Adjective

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 9 verses across 4 of the 27 books. Most frequent in Luke (5 verses); never once in the other 23.

5
Luke
2
John
1
Acts
1
1 Peter

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.