Eternal sin
In Christian hamartiology, eternal sins, unforgivable sins, or unpardonable sins are sins which will not be forgiven by God. One eternal or unforgivable sin (blasphemy against the Holy Spirit) is specified in several passages of the Synoptic Gospels, including , , and .
Apostasy in Christianity
The Epistle to the Hebrews is the classic text on the subject of apostasy in the New Testament. New Testament scholar Scot McKnight argues that the warning passages (2:1–4; 3:7–4:13; 5:11–6:12; 10:19–39; 12:1–29) should be read and interpreted "as an organic whole, each of which expresses four components of the author’s message." These four components are "(1) the subjects or audience in danger of committing the sin, (2) the sin that leads to (3) the exhortation, which if not followed, leads to (4) the consequences of that sin." McKnight concluded from his study that (1) the subjects of this letter were genuine "believers, persons who . . . had converted to Jesus Christ,” (2) The sin "is apostasy, a deliberate and public act of deconfessing Jesus Christ, a rejection of God's Spirit, and a refusal to submit to God and His will," (3) the exhortation is "to a persevering faithfulness to God and his revelation of the new covenant in Jesus Christ," (4) the consequences involve "eternal damnation if a person does not persevere in the faith." B. J. Oropeza concludes that apostasy threatens the community in Hebrews on two fronts: mistreatment by outsiders (persecution) and malaise involving reluctance to listen to godly exhortation.