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G804

ἀσφαλής

asphalḗs /as-fal-ace'/ Ask about this word
from Α (as a negative particle) and sphallo (to "fail")
secure (literally or figuratively)
certain(-ty), safe, sure.

Word Study

In depth

A plain-language study of asphalḗs — 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 asphalḗs, represented by G804, conveys the idea of being secure, certain, or sure. It appears 5 times across 5 unique verses in the Bible. Derived from a negative particle and a word meaning "to fail," its core meaning is something that is reliable, not liable to fall, and trustworthy, whether in a literal or figurative sense.

Biblical Occurrences & Contextual Analysis

In the biblical narrative, G804 is used to express both spiritual and practical assurance. Theologically, it describes the believer's hope as an anchor for the soul, which is both sure and stedfast Hebrews 6:19. It is also used in a practical context, as when Paul explains that to write the same things to the Philippians is safe for them Philippians 3:1. In the book of Acts, the word signifies a need for factual certainty, particularly when Roman officials sought to know the truth about the accusations against Paul amidst a tumult Acts 21:34 and had no certain thing to write to a higher authority Acts 25:26.

Related Words & Concepts

Several related words expand on the concept of security and knowledge:

  • G949 bébaios (stedfast): Often paired with asphalḗs, this word means stable or firm. Its use alongside G804 reinforces the idea of unshakable reliability, as when hope is described as both sure and stedfast Hebrews 6:19.
  • G1097 ginṓskō (to "know"): This verb is connected to the desire for certainty G804. An official could not know the certainty of a situation due to a riot, highlighting the link between knowledge and a secure understanding Acts 21:34.
  • G1125 gráphō (to write): The act of writing is presented as a way to establish what is safe or certain. Paul writing to the brethren is described as safe Philippians 3:1, while Festus lacks a certain matter to write about Paul Acts 25:26.

Theological Significance

The theological weight of G804 is focused on the believer's firm foundation.

  • An Anchor for the Soul: The most prominent theological use of G804 is to describe hope as an anchor G45 for the soul G5590. This hope is not uncertain but is sure and enters into that which is within the veil G2665, signifying a secure connection to God's presence Hebrews 6:19.
  • Safety in Apostolic Teaching: The word establishes the security found in sound doctrine. Paul's repetition of his teachings is not grievous but is intended to be safe for the believers, guarding them in their faith Philippians 3:1.
  • The Basis of Certainty: The use of G804 in Acts highlights that true understanding must be based on certainty, not on the confusion of a tumult G2351 or vague accusations. An official sought certainty before proceeding, showing the importance of a secure footing in facts Acts 22:30.

Summary

In summary, G804 asphalḗs encapsulates a crucial biblical concept of security. Though used sparingly, it carries significant meaning, ranging from the need for factual certainty in human affairs to the profound spiritual assurance a believer possesses in God. It demonstrates the value of a foundation that is secure and cannot fail, whether in matters of truth or the hope that anchors the soul.

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 5 occurrences, inflected in 3 grammatical forms — each row is one form, and the bar is how often it is that form.

  • Accusative Singular Neuter
  • Accusative Singular Feminine
  • Nominative Singular Neuter
Nominative
The subject of the verb.
Accusative
The direct object of the verb.
Singular
One.
Feminine
Feminine grammatical gender.
Neuter
Neuter grammatical gender.

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 5 verses across 3 of the 27 books. Most frequent in Acts (3 verses); never once in the other 24.

3
Acts
1
Philippians
1
Hebrews

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.