Christ: Transliteration of the Greek for “anointed one” (equivalent to Hebrew Messiah). The term is used throughout the NT as a title for Jesus, indicating his role as Messiah and Saviour.
Circumcision: The ritual practice of removing the foreskin of an individual, which was commanded for all male Israelites in OT times as a sign of participation in the covenant God established with Abraham (Gen. 17:9–14).
Faith: Trust in or reliance upon something or someone despite a lack of concrete proof. Salvation, which is purely a work of God’s grace, can be received only through faith (Rom. 5:2; Eph. 2:8–9). The writer of Hebrews calls on believers to emulate those who lived godly lives by faith (Hebrews 11).
Flesh: Depending on the immediate context, either skin (Lev. 4:11), a living being (Gen. 6:13), or sinful human nature (Rom. 8:3).
Gospel: A common translation for a Greek word meaning “good news”—that is, the good news of Jesus Christ and the salvation he made possible by his crucifixion, burial, and resurrection. Gospel with an initial capital letter refers to each of the biblical accounts of Jesus’ life on earth (Matthew, Mark, Luke, and John).
Resurrection: The impartation of new, eternal life to a dead person at the end of time (or in the case of Jesus, on the third day after his death). This new life is not a mere resuscitation of the body (as in the case of Lazarus; John 11:1–44) but a transformation of the body to an eternal state (1 Cor. 15:35–58). Both the righteous and the wicked will be resurrected, the former to eternal life and the latter to judgment (John 5:29).
Sacrifice: An offering to God, often to seek forgiveness of sin. The law of Moses gave detailed instructions regarding various kinds of sacrifices. By his death on the cross, Jesus gave himself as a sacrifice to atone for the sins of believers (Eph. 5:2; Heb. 10:12). Believers are to offer their bodies as living sacrifices to God (Rom. 12:1).