what does the bible say?
Two related theological terms describe what Jesus accomplished through His death: expiation and propitiation. Expiation refers to the removal of sin and guilt through a substitutionary sacrifice—sin is borne away so that the sinner is cleansed and forgiven (2 Corinthians 5:21; 1 Peter 2:24). Propitiation includes this idea but goes further, emphasizing that God’s righteous wrath against sin has been fully satisfied through that same sacrifice.
Modern English Bibles rarely use the word “expiation.” The 1995 version of the NASB includes it once (Numbers 35:33), and the RSV uses it several times, translating Hebrew and Greek terms that other versions render as atonement, purification, or cleansing. The key Greek word hilastērion (and its related forms) is often translated as atonement or propitiation (i.e., Romans 3:25; Hebrews 2:17). While scholars debate which English term best fits specific contexts, most modern translations choose words that encompass both aspects of Christ’s work—the removal of sin and the appeasement of divine wrath.
Although “expiation” is seldom used anymore, the concept remains central to the gospel. Jesus’ sacrifice cleanses sin, removes guilt, and reconciles sinners to God, fulfilling what every Old Testament offering foreshadowed (Hebrews 1:3; 9:14).