3743. hosiós
Lexical Summary
hosiós: Holy, pious, devout, righteous

Original Word: ὅσιος
Part of Speech: Adverb
Transliteration: hosiós
Pronunciation: ho-see-os
Phonetic Spelling: (hos-ee-oce')
KJV: holily
NASB: devoutly
Word Origin: [adverb from G3741 (ὅσιος - holy)]

1. piously

Strong's Exhaustive Concordance
devoutly

Adverb from hosios; piously -- holily.

see GREEK hosios

HELPS Word-studies

Cognate: 3743 hosíōs (an adverb, derived from 3741 /hósios, "what is sanctioned by the Lord") – properly, divinely-sanctioned and therefore worthy of reverence (used only in 1 Thes 2:10).

NAS Exhaustive Concordance
Word Origin
adverb from hosios
Definition
piously, holily
NASB Translation
devoutly (1).

Thayer's Greek Lexicon
STRONGS NT 3743: ὁσίως

ὁσίως (ὅσιος) (from Euripides down), adverb, piously, holily: joined with δικαίως, 1 Thessalonians 2:10 (ἁγνῶς καί ὁσίως καί δικαίως, Theophilus ad Autol. 1, 7).

Topical Lexicon
Meaning and Scope

The adverb derived from the root idea of “holy devotion” portrays conduct that is shaped by covenant faithfulness to God, expressed in visible, practical piety toward both God and neighbor. It emphasizes the quality of life that rises from personal dedication rather than ritual correctness.

Usage in the New Testament

1 Thessalonians 2:10 contains the word’s sole New Testament occurrence: “You are witnesses, and so is God, how devoutly, uprightly, and blamelessly we behaved toward you who believe” (Berean Standard Bible). Here Paul appeals to the Thessalonian believers and to God Himself as joint witnesses to the apostolic team’s character. The adverb stands first in a three-fold description (“devoutly, uprightly, blamelessly”), underscoring that every other facet of Christian ethics must grow out of genuine devotion to God.

Old Testament and Septuagint Foundations

Though the adverb appears only once in the Greek New Testament, its cognate adjective permeates the Septuagint. In Deuteronomy 33:8 it characterizes the devoted service of Levi; in Psalms it often describes those whom God counts as His “holy ones” (for example, Psalm 4:3; Psalm 16:10). This background anchors the New Testament usage in the larger biblical theme that true holiness involves covenant loyalty manifesting itself in concrete actions.

Integration in Pauline Holiness Ethic

Paul regularly links vertical devotion to God with horizontal integrity before people (for example, 1 Corinthians 4:1–5; 2 Corinthians 1:12). In 1 Thessalonians 2:10 the apostles’ “devout” manner validates their message and models the life they expect of new believers (compare 1 Thessalonians 4:1). The sequence—devoutly before God, uprightly in moral dealings, blamelessly in reputation—shows that sanctification is holistic and observable.

Ministry Applications

1. Character witness: Leaders cannot separate message from manner. A life marked by devout reverence secures credibility (1 Timothy 4:12).
2. Discipleship pattern: New believers learn theology best when they see holy devotion fleshed out in daily relationships (Philippians 3:17).
3. Evangelistic power: Outsiders are drawn when they observe a community whose worship of God translates into ethical consistency (Matthew 5:16).

Historical Reception in the Church

Early church writers drew on 1 Thessalonians 2:10 to defend the moral integrity of missionary bishops and presbyters. Medieval commentators contrasted external religiosity with the inner devotion this term conveys. During the Reformation, the verse was cited to insist that justification by faith produces a sanctified lifestyle.

Theological Reflections

1. Holiness begins with God’s saving initiative, but it is displayed through the believer’s Spirit-empowered choices (Ephesians 2:10).
2. The adverb highlights worship as a lived reality; liturgy without life contradicts the biblical pattern.
3. Because God Himself is a “witness,” all ministry occurs coram Deo—before the face of God—ensuring ultimate accountability.

Related Concepts and Further Study

Holiness: Hebrews 12:14; 1 Peter 1:15–16

Integrity: Proverbs 10:9; Titus 2:7–8

Witness of Conduct: Matthew 5:13–16; Philippians 2:14–15

Forms and Transliterations
οσιως οσίως ὁσίως hosios hosiōs hosíos hosíōs osios osiōs
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Interlinear GreekInterlinear HebrewStrong's NumbersEnglishman's Greek ConcordanceEnglishman's Hebrew ConcordanceParallel Texts
Englishman's Concordance
1 Thessalonians 2:10 Adv
GRK: θεός ὡς ὁσίως καὶ δικαίως
NAS: how devoutly and uprightly
KJV: God [also], how holily and justly
INT: God how holily and righteously

Strong's Greek 3743
1 Occurrence


ὁσίως — 1 Occ.

3742
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