Summary
Quick facts
- Strong’s Number
- G5569
- Original Word
- ψευδάδελφος
- Transliteration
- pseudádelphos
- Pronunciation
- psyoo-dad'-el-fos
- Part of Speech
- noun
- Category
- Bible Names > Bible Occupations & Titles, Bible Names > Nations & People Groups, Unique Words, Warnings in Love
- Root / Etymology
- from G5571 (ψευδής) and G80 (ἀδελφός);
- Frequency
- 2×
- Gematria
- 1919
Where it appears
Loading distribution…

Commentary
Contributors: · · · ·
Strong's G5569: A compound word combining "pseudo" (false) and "adelphos" (brother), referring to pretend Christians who infiltrate the church with harmful intentions, particularly prevalent in early church conflicts over doctrine and practice.
U- Unveiling the Word
The term ψευδάδελφος (pseudadelphos) combines the concepts of deception and brotherhood, creating a powerful description of those who falsely claim Christian fellowship. This compound word perfectly captures the serious threat faced by the early church - individuals who presented themselves as genuine believers but harbored ulterior motives. The apostle Paul encountered such false brothers who sought to undermine the gospel of grace with legalistic requirements. Today, this term remains remarkably relevant as churches continue to face challenges from those who infiltrate Christian communities with false teaching or malicious intent, making it crucial for believers to exercise discernment while maintaining genuine Christian fellowship.
N - Necessary Information
Etymology:
The prefix ψευδ- indicates falseness or deception
The root -αδελφος conveys brotherhood or close relationship
D - Defining Meanings
For compound words:
ψευδ- (false) + αδελφός (brother) creates a term describing someone who presents themselves as a spiritual sibling but is actually an impostor
Translation Options:
E - Exploring Similar Words
R - Reviewing the Word's Morphology
Noun Features:
The word follows standard second declension patterns:
Singular: ψευδάδελφος, ψευδάδελφον, ψευδαδέλφου, ψευδαδέλφῳ
Plural: ψευδάδελφοι, ψευδαδέλφους, ψευδαδέλφων, ψευδαδέλφοις
Related adjective form: ψευδαδελφικός (false-brotherly)
Get Your Certificate
Give a gift of $50 or more and receive a certificate, mailed to your door.
S - Studying Lexicon Insights
The major lexicons consistently emphasize the deliberately deceptive nature of ψευδάδελφος. BDAG highlights its use in contexts of ecclesiastical conflict, while Thayer's emphasizes the element of intentional infiltration. LSJ notes its rare occurrence in non-Christian literature, suggesting its special significance in Christian contexts. Vine's draws attention to its connection with Judaizers who opposed Paul's ministry. Strong's connects it to other ψευδ- compound words describing various forms of religious deception. Moulton and Milligan document its absence in papyri, suggesting it may be a Christian neologism. This combination of insights reveals a term specifically crafted to address a serious threat to early church unity and doctrinal purity.
T - Tracing the Scriptures
First appearance:
2 Corinthians 11:26: "In journeys often, in perils of waters, in perils of robbers, in perils by mine own countrymen, in perils by the heathen, in perils in the city, in perils in the wilderness, in perils in the sea, in perils among false brethren [ψευδαδέλφοις];"
Additional References:
Galatians 2:4
A - Analyzing Classical Usage
N - Noteworthy Summary
The term ψευδάδελφος serves as a powerful reminder of the ongoing spiritual battle within Christian communities. It highlights the need for discernment while maintaining genuine Christian love. The good news of King Jesus shines brighter against this backdrop - while false brothers may infiltrate earthly fellowships, the true Church remains secure in the Messiah's perfect knowledge and protection. This word challenges us to maintain pure doctrine while extending grace, knowing that our Lord perfectly distinguishes true from false profession.
D - Did You Know?
Strong's G5569: A compound word combining "pseudo" (false) and "adelphos" (brother), referring to pretend Christians who infiltrate the church with harmful intentions, particularly prevalent in early church conflicts over doctrine and practice.
Part of speech: Masculine Noun
Tags: false brothers, deception, church infiltrators, false believers, church protection, discernment, doctrine, fellowship, church membership, spiritual warfare