ἄπιστος

unbelieving, incredulous, unchristian, unbeliever

Definition

The adjective ἄπιστος (apistos) fundamentally describes someone who lacks faith, trust, or belief. In the New Testament, it most often refers to those who do not believe in Jesus Christ or the gospel message, such as the 'unbelieving generation' Jesus addresses (Mark 9:19). It can also describe a state of being untrustworthy or faithless in a general moral sense, as seen when Paul speaks of an 'unbelieving' spouse (1 Corinthians 7:12-13). In some contexts, it functions as a substantive noun simply meaning 'an unbeliever' (1 Corinthians 6:6).

Biblical Usage

ἄπιστος is used 21 times across the Gospels, Acts, and the Pauline epistles. It frequently appears in Jesus's rebukes of general faithlessness (Matthew 17:17, Luke 9:41) and in Paul's discussions contrasting believers and unbelievers within the church and the world (1 Corinthians 6:6, 1 Corinthians 7:12-15, 2 Corinthians 6:14). It describes both active rejection of the Christian message and a passive state of being without faith.

Etymology

Derived from the alpha-privative ἀ- (a-, meaning 'not' or 'without') combined with the root πιστός (pistos, G4103), meaning 'faithful, believing, or trustworthy.' Thus, its core meaning is 'not faithful' or 'without faith.' It is the direct antonym of πιστός.

Semantic Range

This word is central to the New Testament's division between those in the kingdom of God and those outside it. Understanding ἄπιστος highlights the biblical emphasis on active, personal faith (pistis) as the defining mark of God's people. It enriches reading by clarifying that unbelief is not merely intellectual doubt but a relational stance of distrust toward God, with implications for ethics, community boundaries (2 Corinthians 6:14), and mission.

In the Greco-Roman world, 'faith' (pistis) was a broad concept encompassing personal loyalty, trustworthiness, and good faith in social and commercial relationships. Therefore, being labeled ἄπιστος could imply being socially unreliable or dishonest, not just theologically incorrect. This cultural backdrop adds depth to its use, especially in passages about community integrity.

ἀπειθής (apeithēs, G545) — emphasizes disobedience and rebelliousness, whereas ἄπιστος focuses on lack of trust/faith. ἀσεβής (asebēs, G765) — focuses on impiety and lack of reverence toward God, a broader term for wickedness.

Word Details

Scripture References