52. agnoia
Lexical Summary
agnoia: Ignorance

Original Word: ἀγνοία
Part of Speech: Noun, Feminine
Transliteration: agnoia
Pronunciation: ag-no-ee'-ah
Phonetic Spelling: (ag'-noy-ah)
KJV: ignorance
NASB: ignorance
Word Origin: [from G50 (ἀγνοέω - unaware)]

1. ignorance
2. (properly) the quality of ignorance

Strong's Exhaustive Concordance
ignorance.

From agnoeo; ignorance (properly, the quality) -- ignorance.

see GREEK agnoeo

NAS Exhaustive Concordance
Word Origin
from agnoeó
Definition
ignorance
NASB Translation
ignorance (4).

Thayer's Greek Lexicon
STRONGS NT 52: ἄγνοια

ἄγνοια, (ας, (from Aeschylus down), want of knowledge, ignorance, especially of divine things: Acts 17:30; 1 Peter 1:14; such as is inexcusable, Ephesians 4:18 (Wis. 14:22); of moral blindness, Acts 3:17. (Cf. ἀγνοέω.)

Topical Lexicon
Overview

In the apostolic writings, ἀγνοία describes a state of spiritual and moral unawareness that leaves a person estranged from God’s will. While sometimes rooted in simple lack of information, it is never morally neutral; it exposes a heart that has not yet come under the transforming light of the gospel.

Usage in the New Testament

Acts 3:17 shows Peter interpreting the crowd’s complicity in Jesus’ crucifixion as having occurred “in ignorance,” yet he immediately calls them to repentance, proving that ignorance does not excuse sin.
Acts 17:30 expands the scope from Israel to all nations: “Although God overlooked the ignorance of earlier times, He now commands all people everywhere to repent.” Divine patience is highlighted, but the demand for response is universal and urgent.
Ephesians 4:18 attributes Gentile alienation from the life of God to “the ignorance that is in them due to the hardness of their hearts.” Here ignorance is inseparable from moral obstinacy.
1 Peter 1:14 contrasts former ignorance with the obedient life of believers: “As obedient children, do not conform to the passions of your former ignorance.” Salvation ushers in an entirely new moral horizon.

Relationship to Old Testament Themes

The Old Testament often pairs ignorance with sin offerings (Leviticus 4) and with prophetic calls to hear and understand (Isaiah 6:9–10). Paul’s mention of “times past” that God “overlooked” echoes these sacrificial and prophetic concessions. Yet the gospel fulfils what sacrifices and prophets merely anticipated: the definitive revelation of God in Christ removes every excuse for remaining in darkness.

Theological Implications

1. Universal Accountability—Ignorance delays immediate judgment (Acts 17:30) but never removes culpability (Romans 1:20).
2. Necessity of Revelation—Only the gospel dispels ignorance; natural reason alone cannot lead to saving knowledge (1 Corinthians 1:21).
3. Moral Dimension—Ignorance and hardness of heart are intertwined (Ephesians 4:18), revealing sin as both intellectual and volitional.
4. Transforming Grace—Believers are called to discontinue all patterns belonging to pre-conversion ignorance (1 Peter 1:14), demonstrating regeneration’s ethical fruit.

Christological and Missional Dimensions

Jesus’ prayer, “Father, forgive them, for they do not know what they are doing,” surfaces the theme of ignorance even at Calvary. Luke records it not to lessen guilt but to magnify grace. Post-resurrection mission, therefore, targets ignorant peoples with urgent proclamation, trusting the Spirit to open eyes (Acts 26:18).

Pastoral and Discipleship Applications

• Preaching must expose ignorance while offering the remedy of Christ’s truth.
• Discipleship involves replacing ignorant thought patterns with renewed minds (Romans 12:2).
• Corporate worship should include confessions that acknowledge sins of ignorance, cultivating humility and dependence on divine illumination.

Doctrinal Safeguard Against Willful Blindness

Biblical authors refuse to separate ignorance from responsibility. Any teaching that lessens the demand for faith and repentance on the grounds of unawareness contradicts apostolic witness. The church must therefore hold together God’s compassionate patience and His unchanging call to repentance.

Summary

Ἀγνοία pinpoints humanity’s tragic yet culpable estrangement from God. Scripture portrays this ignorance as pardoned in Christ yet perilous if unrepented. The gospel alone shatters the darkness, summons obedience, and establishes a people who once were ignorant but now live in the radiant knowledge of their Lord.

Forms and Transliterations
αγνοια αγνοία άγνοια ἀγνοίᾳ αγνοιαν άγνοιαν ἄγνοιαν αγνοιας αγνοίας ἀγνοίας agnoia agnoíāi agnoian ágnoian agnoias agnoías
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Englishman's Concordance
Acts 3:17 N-AFS
GRK: ὅτι κατὰ ἄγνοιαν ἐπράξατε ὥσπερ
NAS: that you acted in ignorance, just
KJV: that through ignorance ye did [it], as
INT: that in ignorance you acted as

Acts 17:30 N-GFS
GRK: χρόνους τῆς ἀγνοίας ὑπεριδὼν ὁ
NAS: the times of ignorance, God
KJV: the times of this ignorance God
INT: times of ignorance having overlooked

Ephesians 4:18 N-AFS
GRK: διὰ τὴν ἄγνοιαν τὴν οὖσαν
NAS: because of the ignorance that is in them, because
KJV: through the ignorance that is
INT: on account of the ignorance which is

1 Peter 1:14 N-DFS
GRK: ἐν τῇ ἀγνοίᾳ ὑμῶν ἐπιθυμίαις
NAS: lusts [which were yours] in your ignorance,
KJV: in your ignorance:
INT: in the ignorance of you desires

Strong's Greek 52
4 Occurrences


ἀγνοίᾳ — 1 Occ.
ἄγνοιαν — 2 Occ.
ἀγνοίας — 1 Occ.

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