4030. perikephalaia
Lexical Summary
perikephalaia: Helmet

Original Word: περικεφαλαία
Part of Speech: Noun, Feminine
Transliteration: perikephalaia
Pronunciation: pe-ree-ke-fa-LAH-yah
Phonetic Spelling: (per-ee-kef-al-ah'-yah)
KJV: helmet
NASB: helmet
Word Origin: [feminine of a compound of G4012 (περί - about) and G2776 (κεφαλή - head)]

1. encirclement of the head, i.e. a helmet

Strong's Exhaustive Concordance
helmet.

Feminine of a compound of peri and kephale; encirclement of the head, i.e. A helmet -- helmet.

see GREEK peri

see GREEK kephale

NAS Exhaustive Concordance
Word Origin
from peri and kephalé
Definition
a helmet
NASB Translation
helmet (2).

Thayer's Greek Lexicon
STRONGS NT 4030: περικεφαλαία

περικεφαλαία, περικεφαλαίας, (περί and κεφαλή), a helmet: 1 Thessalonians 5:8; τοῦ σωτηρίου (from Isaiah 59:17), i. e. dropping the figure, the protection of soul which consists in (the hope of) salvation, Ephesians 6:17. (Polybius; the Sept. for כּובַע .)

Topical Lexicon
Imagery of the Helmet in Scripture

A helmet is the final, sealing piece of a soldier’s defensive armor. Protecting the most vital command center—the head—it signifies security, identity, and clarity of thought in the midst of conflict. The helmet motif appears in Isaiah 59:17, where the LORD clothes Himself with “the helmet of salvation,” providing the prophetic seed for the apostolic development of the theme.

Old Testament Roots

In Israel’s warfare, helmets of bronze or iron were worn by soldiers such as Goliath (1 Samuel 17:5). Yet Isaiah’s vision shifts attention from human skill to divine intervention: God Himself dons a “helmet of salvation,” portraying deliverance initiated and accomplished by Him. This sets the theological pattern: salvation protects and enables the people of God, not vice-versa.

Use in the Pauline Epistles

Paul employs περικεφαλαία twice, rooting believers firmly in the saving work of God.
Ephesians 6:17 – “And take the helmet of salvation and the sword of the Spirit, which is the word of God.”
1 Thessalonians 5:8 – “But since we belong to the day, let us be sober, putting on the breastplate of faith and love, and the helmet of the hope of salvation.”

In Ephesians, the helmet is salvation itself; in Thessalonians, it is “the hope of salvation.” In both letters the emphasis falls on a present possession grounded in a future certainty.

Theological Themes

1. Assurance. The helmet symbolizes the believer’s secure standing in Christ (Romans 8:30).
2. Hope. Salvation has already been won, yet awaits consummation (Romans 13:11). The helmet guards the mind with confident expectation.
3. Sanctified Thought. Protected minds are free to dwell on “whatever is true” (Philippians 4:8), resisting deceptive philosophies (Colossians 2:8).
4. Corporate Defense. Armor metaphors in Ephesians 6 arise within a letter stressing church unity; the helmet is donned in community, not isolation.

Christological Perspective

Jesus, the divine warrior of Isaiah 59, has triumphed at the cross and now shares His own helmet with His body. The Head is already exalted; the members share in His victory (Ephesians 2:6). Thus the helmet directs attention upward to Christ, safeguarding believers from self-reliance and anchoring them in His accomplished redemption.

Pastoral and Discipleship Applications

• Evangelism: Proclaiming the gospel supplies others with the only true headgear against judgment.
• Counseling: Doubt and condemnation attack the mind; reminding saints of their position in Christ restores stability.
• Worship: Songs and prayers that rehearse salvation history reinforce helmet-like protection.
• Youth Ministry: Grounding young believers in doctrinal clarity inoculates them against cultural pressures.

Historical Interpretation

Early fathers such as Ignatius and Irenaeus linked the helmet with the baptismal confession. Reformers highlighted assurance: “Helm of salvation is faith alone,” wrote Luther. Puritans stressed meditation on Christ’s promises as the practical wearing of the helmet. Throughout church history, revival movements have been marked by renewed confidence in full salvation, demonstrating the living power of the metaphor.

Practical Exhortations for Today

1. Daily Deliberate Remembrance – rehearse Scriptures of salvation (for example, 2 Timothy 1:9; Titus 3:5).
2. Hope-Focused Prayer – ask the Spirit to lift eyes beyond present trials (Romans 15:13).
3. Doctrinal Depth – study justification, adoption, and glorification to tighten the helmet’s straps.
4. Corporate Accountability – small groups that speak gospel truth help keep the helmet firmly in place.

Bearing the helmet of salvation, believers enter the spiritual battlefield confident that the decisive victory is already secured and their minds are guarded until the day they see their Captain face to face.

Forms and Transliterations
περικεκοσμημέναι περικεφαλαία περικεφαλαίαι περικεφαλαίαις περικεφαλαιαν περικεφαλαίαν περικεφαλαίας περικνήμισι perikephalaian perikephalaían
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Englishman's Concordance
Ephesians 6:17 N-AFS
GRK: καὶ τὴν περικεφαλαίαν τοῦ σωτηρίου
NAS: And take THE HELMET OF SALVATION,
KJV: And take the helmet of salvation, and
INT: Also the helmet of salvation

1 Thessalonians 5:8 N-AFS
GRK: ἀγάπης καὶ περικεφαλαίαν ἐλπίδα σωτηρίας
NAS: and love, and as a helmet, the hope
KJV: and for an helmet, the hope
INT: love and [as] helmet hope of salvation

Strong's Greek 4030
2 Occurrences


περικεφαλαίαν — 2 Occ.

4029
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