1505. eilikrineia
Lexical Summary
eilikrineia: Sincerity, purity, integrity

Original Word: εἰλικρίνεια
Part of Speech: Noun, Feminine
Transliteration: eilikrineia
Pronunciation: ay-leek-ree'-ni-ah
Phonetic Spelling: (i-lik-ree'-ni-ah)
KJV: sincerity
NASB: sincerity
Word Origin: [from G1506 (εἰλικρινής - sincere)]

1. clearness
2. (by implication) purity (figuratively)

Strong's Exhaustive Concordance
sincerity.

From eilikrines; clearness, i.e. (by implication) purity (figuratively) -- sincerity.

see GREEK eilikrines

HELPS Word-studies

Cognate: 1505 eilikríneia – literally, "judged in the light of the sun"; i.e. pure inner motives ("sincerity"). See 1506 (eilikrines).

NAS Exhaustive Concordance
Word Origin
from eilikrinés
Definition
clearness, by impl. purity, sincerity
NASB Translation
sincerity (3).

Thayer's Greek Lexicon
STRONGS NT 1505: εἰλικρίνεια

εἰλικρίνεια (ἐιλικρινια T (WH, see Iota; on the breathing see WH's Appendix, p. 144)), εἰλικρινείας, (εἰλικρινής, which see), purity, sincerity, ingenuousness: 1 Corinthians 5:8; 2 Corinthians 2:17; τοῦ Θεοῦ, which God effects by the Holy Spirit, 2 Corinthians 1:12 (Winers Grammar, § 36, 3 b.). (Theophrastus, Sextus Empiricus, Stobaeus)

Topical Lexicon
Concept and Scope

Strong’s Greek 1505, εἰλικρίνεια, denotes transparent purity of motive—an inner reality that stands the searching light of God’s presence. It is not mere honesty before people but singleness of heart before the Lord, free from the admixture of self-interest, duplicity, or pragmatism.

Occurrences in the New Testament

1 Corinthians 5:8 links sincerity with truth as the “unleavened bread,” contrasting it with the “leaven of malice and wickedness.” Paul draws upon the Passover imagery to picture the church as a cleansed community celebrating continual fellowship with Christ.

2 Corinthians 1:12 appeals to sincerity as the ground of Paul’s apostolic “boast.” His conduct among the Corinthians was marked by “godly sincerity, not by worldly wisdom but by the grace of God,” proving that grace produces integrity, not expediency.

2 Corinthians 2:17 sets sincerity over against commercialized ministry: “For we are not like so many, who peddle the word of God for profit… we speak before God with sincerity.” Authentic preaching is measured by the purity of motive before the divine audience.

Old Testament Roots and Jewish Background

While εἰλικρίνεια itself is rare in the Septuagint, its idea resonates with Hebrew terms such as תֹּם (integrity) and יָשָׁר (uprightness). The unleavened bread of Exodus 12:15 typified separation from corrupting influence; Paul’s Passover allusion (1 Corinthians 5:7-8) shows continuity between covenant symbols. The claim of Psalm 26:2, “Examine me, O LORD, and prove me,” anticipates the New Testament call to hearts that welcome divine scrutiny.

Paul’s Theology of Sincerity

1. Grounded in Grace: 2 Corinthians 1:12 explicitly locates sincerity in “the grace of God,” not human wisdom. Grace liberates from self-promotion, enabling transparent service.
2. Tested by Conscience: Paul repeatedly invokes conscience (1 Corinthians 4:4; Romans 9:1) as the internal witness that his motives withstand God’s judgment.
3. Essential to New-Covenant Ministry: In 2 Corinthians 2–4 the apostle contrasts sincere proclamation with the veiled minds of the old covenant and the exploitative itinerants of his day. An unveiled message requires an unveiled heart.

Contrast with Malice and Hypocrisy

Sincerity is paired with “truth” (1 Corinthians 5:8) and opposed to “malice,” “wickedness,” and profit-driven preaching (2 Corinthians 2:17). Hypocrisy masks self-interest; sincerity unmasks Christ. The church is called to purge “old leaven” continually, lest subtle forms of self-seeking infiltrate worship, discipline, or teaching.

Ministry Significance

• Preaching: Motive precedes method. A polished message without εἰλικρίνεια is merchandise, not ministry.
• Leadership Credibility: Paul’s defense of his apostleship centers on transparent conduct. Modern shepherds gain lasting trust not by charisma but by sincerity proven in trials (2 Corinthians 6:4-6).
• Sacramental Life: The Lord’s Supper, echoing Passover, demands self-examination (1 Corinthians 11:28). The “feast” is genuinely kept only when hearts are free of hidden leaven.
• Mission: Evangelistic effectiveness flows from authenticity (1 Thessalonians 2:3-5). A message of uncompromising truth must be delivered by messengers of uncompromised motive.

Historical Reception

Early Fathers such as Ignatius urged ministers to “do nothing in pretense,” echoing Paul’s call. The Reformers, combating clerical profiteering, cited 2 Corinthians 2:17 to insist on preaching “gratis.” Evangelical revivals repeatedly recovered the priority of motive over method, from the Moravians’ simplicity to nineteenth-century mission societies refusing commercial entanglements.

Practical Application for the Contemporary Church

• Cultivate daily transparency before God through Scripture-shaped self-examination (Psalm 139:23-24; James 1:25).
• Practice open financial accountability in ministry to remove suspicion of profiteering.
• Foster church discipline that removes the “old leaven,” maintaining a community atmosphere where sincerity flourishes.
• Encourage prayer for pure motives in service (Philippians 1:9-11), remembering that Christ will “bring to light what is hidden in darkness and will disclose the motives of men’s hearts” (1 Corinthians 4:5).

Summary

εἰλικρίνεια captures the shining purity God desires in His people—a disposition wrought by grace, assessed by conscience, displayed in conduct, and essential to faithful ministry. Wherever the gospel produces hearts free of duplicity, Christ is plainly seen and His word advances without hindrance.

Forms and Transliterations
ειλικρινεία εἰλικρινείᾳ ειλικρινείας εἰλικρινείας ειλικρινια εἰλικρινίᾳ ειλικρινιας εἰλικρινίας eilikrineia eilikrineíāi eilikrineias eilikrineías
Links
Interlinear GreekInterlinear HebrewStrong's NumbersEnglishman's Greek ConcordanceEnglishman's Hebrew ConcordanceParallel Texts
Englishman's Concordance
1 Corinthians 5:8 N-GFS
GRK: ἐν ἀζύμοις εἰλικρινείας καὶ ἀληθείας
NAS: but with the unleavened bread of sincerity and truth.
KJV: the unleavened [bread] of sincerity and
INT: with unleavened [bread] of sincerity and of truth

2 Corinthians 1:12 N-DFS
GRK: ἁπλότητι καὶ εἰλικρινείᾳ τοῦ θεοῦ
NAS: and godly sincerity, not in fleshly
KJV: and godly sincerity, not with
INT: simplicity and sincerity of God

2 Corinthians 2:17 N-GFS
GRK: ὡς ἐξ εἰλικρινείας ἀλλ' ὡς
NAS: of God, but as from sincerity, but as from God,
KJV: as of sincerity, but as
INT: as of sincerity but as

Strong's Greek 1505
3 Occurrences


εἰλικρινείᾳ — 1 Occ.
εἰλικρινείας — 2 Occ.

1504
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