Summary
Quick facts
- Strong’s Number
- G81
- Original Word
- ἀδελφότης
- Transliteration
- adelphótēs
- Pronunciation
- ad-el-fot'-ace
- Part of Speech
- noun
- Root / Etymology
- from G80 (ἀδελφός);
- Frequency
- 2×
- Gematria
- 1118
Where it appears
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Definition
Strong 1890 brotherhood (properly, the feeling of brotherliness), i.e. the (Christian) fraternity
brethrenbrotherhood
from G80 (ἀδελφός);

Commentary
Contributors: · · · ·
Pronunciation Guide: ah-del-FOH-tace
Basic Definition
Strong's G81: ἀδελφότης refers to the spiritual brotherhood or sisterhood of believers in Christ, emphasizing the familial bond shared among Christians as children of God. This term uniquely captures the intimate fellowship and mutual care that characterizes authentic Christian community.
Etymology and Morphology
Word Morphology:
Word Origin & History
The term ἀδελφότης emerges from the root word ἀδελφός, which literally means "from the same womb," highlighting the closest possible familial relationship. In classical Greek literature, Plato used related terms to describe civic brotherhood in "The Republic," though without the spiritual dimension that would later characterize its New Testament usage.
The concept evolved significantly in Hellenistic Judaism, where it began to take on more spiritual connotations, particularly in describing the community of faith. This development laid the groundwork for its distinctive New Testament application.
Expanded Definitions & Translation Options
Translation Options:
Biblical Usage
In the New Testament, ἀδελφότης appears only twice, but these occurrences are theologically significant. The term emphasizes the universal nature of Christian fellowship that transcends geographical, cultural, and social boundaries.
The Apostle Peter employs this term to emphasize the worldwide community of believers united in their struggles and victories. This usage suggests a profound understanding of the church as a family bound together by something stronger than blood – the Spirit of God.
Cultural Insights
In the first-century Roman world, the concept of brotherhood carried significant social and legal implications. Roman social clubs (collegia) often used familial terminology, but the Christian ἀδελφότης was revolutionary in crossing social boundaries. While Roman brotherhoods were typically limited by class, gender, or profession, the Christian brotherhood united slaves with free persons, Jews with Gentiles, and men with women in one spiritual family.
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This radical inclusivity caused significant social tension and partly explains why early Christians faced persecution. Their commitment to treating all members as spiritual siblings challenged the rigid social hierarchies of the Roman world.
Theological Significance
The concept of ἀδελφότης beautifully illustrates the transformative nature of salvation in Christ. Through faith, believers are adopted into God's family, receiving not only a new Father but also a new family. This spiritual kinship is not merely metaphorical but represents a real spiritual bond formed by the Holy Spirit.
This brotherhood transcends natural family ties while not negating them, creating a new community where believers are called to demonstrate supernatural love and care for one another. It reflects the unity for which Jesus prayed in John 17:21 and embodies the early church's radical sharing of life described in Acts 2:42-47.
Personal Application
Understanding ἀδελφότης challenges us to examine how we view and treat our fellow believers. Do we see them truly as family members for whom we would sacrifice? This concept calls us beyond mere church attendance to deep, authentic community marked by mutual care, shared resources, and spiritual encouragement.
In our increasingly isolated modern world, embracing true Christian brotherhood offers a powerful antidote to loneliness and individualism, calling us to live as God intended – in genuine, sacrificial community.
Related Words
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Remember This
ἀδελφότης represents not just a spiritual concept but a divine reality that should transform how we live, love, and relate as members of God's family.