Strong’s G5361: φιλάδελφος (philadelphos) describes one who actively demonstrates loving care toward fellow believers as spiritual family members. This adjective characterizes the essential nature of Christian relationships, emphasizing the practical expression of familial love within the body of the Messiah.

U- Unveiling the Word

The term φιλάδελφος embodies the active demonstration of familial love among believers. As a compound word, it combines the concepts of tender affection (philos) with brotherly relationship (adelphos), creating an adjective that describes someone who consistently shows family-like love to fellow believers. In the New Testament context, this word represents a radical departure from the world’s self-centered relationships, calling believers to demonstrate supernatural care for one another. The early church understood this term as more than mere sentiment—it demanded practical expression through hospitality, sharing of resources, and mutual support. Today, φιλάδελφος continues to challenge believers to move beyond superficial fellowship to demonstrate authentic family-like care within the church community.

N – Necessary Information

• Greek Word: φιλάδελφος, philadelphos, fil-AD-el-fos
• Detailed pronunciation: phi (as in “fee”) + la (as in “lab”) + del (as in “dell”) + phos (as in “foss”)
• Part of Speech: Adjective

Etymology:

• φιλ- (phil-): prefix meaning “loving”
• ἀδελφός (adelphos): root word meaning “brother”
• -ος (-os): adjectival suffix indicating possession of a quality

D – Defining Meanings

• Loving one’s brother or sister
• Showing familial affection
• Demonstrating brotherly kindness

For compound words:

• φιλ- (phil-): adds the active sense of loving or showing affection
• ἀδελφός (adelphos): specifies the familial nature of the love
• -ος (-os): makes it descriptive of a person who embodies this quality

Translation Options:

• “Brother-loving” – most literal but potentially awkward in English
• “Showing family affection” – captures the active demonstration of the quality
• “Fraternally affectionate” – formal but comprehensive

E – Exploring Similar Words

• ἀγαπητός (agapetos, ag-ap-ay-TOS) – beloved, expressing divine love
  See G27
• φίλος (philos, FEE-los) – friend, showing general affection
  See G5384
• φιλόστοργος (philostorgos, fil-OS-tor-gos) – tenderly loving
  See G5387

R – Reviewing the Word’s Morphology

• Case: Nominative, Genitive, Dative, Accusative
• Number: Singular and Plural
• Gender: Masculine, Feminine, Neuter
• Declension: Second declension

This adjective follows regular second declension patterns:
Masculine Singular:

• Nominative: φιλάδελφος
• Genitive: φιλαδέλφου
• Dative: φιλαδέλφῳ
• Accusative: φιλάδελφον
• Related noun: φιλαδελφία (brotherly love)
• Related adverb: φιλαδέλφως (in a brotherly manner)

S – Studying Lexicon Insights

BDAG emphasizes φιλάδελφος as describing the active demonstration of love within the Christian community. Thayer’s highlights its usage in contexts of practical care and mutual support. LSJ traces its development from classical family contexts to specifically Christian usage. Vine’s notes its connection to both natural and spiritual brotherhood, while emphasizing its practical expression. Strong’s focuses on its compound nature, showing how it combines affection with family relationship. LEH connects it to Septuagint concepts of family loyalty. Moulton and Milligan’s papyri evidence reveals its use in describing close-knit community relationships, particularly in religious contexts.

T – Tracing the Scriptures

First appearance:

“Finally, all of you be of one mind, having compassion for one another; love as brothers [φιλάδελφος], be tenderhearted, be courteous” 1 Peter 3:8

Additional References:
The adjective φιλάδελφος appears only once in the New Testament.

A – Analyzing Classical Usage

N – Noteworthy Summary

φιλάδελφος powerfully describes the character of one who actively demonstrates family-like love within the body of the Messiah. This term reveals how the gospel transforms relationships, creating a new family united by the blood of Jesus. The good news is that through the Holy Spirit, believers can demonstrate supernatural love that transcends natural family bonds. This love becomes a powerful testimony to the world of how the Messiah’s sacrifice creates a new community marked by genuine care and affection.

D – Did You Know?

• The term was adopted by early Christians to describe their distinctive community life
• It appears in ancient inscriptions describing ideal family relationships
• The concept influenced the development of monastic communities

Strong’s G5361: φιλάδελφος (philadelphos) describes one who actively demonstrates loving care toward fellow believers as spiritual family members. This adjective characterizes the essential nature of Christian relationships, emphasizing the practical expression of familial love within the body of the Messiah.

Part of speech: Adjective

Tags: brotherly love, Christian character, family affection, spiritual siblings, Christian community, church relationships, biblical love, Christian virtues, spiritual family, divine love​​​​​​​​​​​​​​​​