Atonement
Atonement is the biblical word for what God does to deal with sin so that a guilty people can live in fellowship with a holy God. In the Old Testament it is expressed chiefly through the Hebrew verb kaphar and the sacrificial system, above all the annual Day of Atonement described in Leviticus 16. In the New Testament the same reality is announced as fulfilled in the death of Jesus Christ, the one sacrifice that truly removes sin.
This dictionary entry offers a concise biblical overview: the vocabulary, the institutions of Israel's worship, the key passages and the way the apostles read them in the light of the cross. The fuller doctrinal discussion belongs to the theology article on the same subject.
1. Etymology and meaning
The central Hebrew verb is kaphar (כָּפַר), normally in the intensive form kipper, translated “to make atonement.” Scholars debate its root sense. Some link it to “cover” (compare the Akkadian kuppuru, “to wipe off, purge”); others connect it with the noun kopher (כֹּפֶר), “ransom,” the price paid to release a life (Exodus 30:12; 21:30). Both ideas fit the biblical usage: atonement purges defilement and also pays the price that sin incurs, turning away God's just wrath.
Related words include kippurim (כִּפֻּרִים), “atonements,” as in Yom Kippurim, the Day of Atonement (Leviticus 23:27-28), and kapporet (כַּפֹּרֶת), the gold lid of the ark, traditionally rendered “mercy seat” (Exodus 25:17-22). In the Greek Old Testament and the New Testament the key terms are hilaskomai (“to propitiate, make atonement”), hilasmos (“propitiation,” 1 John 2:2; 4:10) and hilasterion (“mercy seat” or “propitiation,” Romans 3:25; Hebrews 9:5). The English word itself was coined from “at one,” expressing reconciliation.
2. Historical context and biblical use
Sacrifice in Israel
Atonement language runs through the Levitical offerings. The burnt offering is accepted “to make atonement” for the worshiper (Leviticus 1:4), and the sin offering and guilt offering repeatedly end with the formula that the priest “shall make atonement for him, and he shall be forgiven” (Leviticus 4:20, 26, 31, 35). The pattern is consistent: a substitute animal dies, its blood is applied by the priest, and God grants forgiveness.
The Day of Atonement
Leviticus 16 describes the most solemn day of Israel's year, the tenth day of the seventh month. Only on this day, and only after the death of Nadab and Abihu had shown the danger of careless approach (16:1-2), the high priest entered the Most Holy Place. He first offered a bull for his own sin (16:6, 11). Then two goats were chosen by lot (16:8). One was slain as a sin offering for the people, and its blood was sprinkled on and before the mercy seat (16:15), cleansing the sanctuary from the uncleanness of Israel (16:16). Over the second goat the high priest laid both hands, confessed all the iniquities of the people and sent it into the wilderness, bearing their sins to a remote area (16:21-22). The meaning of “Azazel” (16:8, 10) is uncertain; it may name the goat that departs, a remote place or a desert power, and interpreters remain divided. The purpose of the day is stated plainly: “on this day shall atonement be made for you to cleanse you. You shall be clean before the LORD from all your sins” (16:30). The people were to afflict themselves and do no work (16:29, 31; 23:27-32).
Atonement beyond the altar
The verb is also used where no animal is offered. Moses goes up to plead for Israel after the golden calf, saying “perhaps I can make atonement for your sin” (Exodus 32:30). Aaron's censer stops the plague (Numbers 16:46-48), and Phinehas's zeal “made atonement for the people of Israel” (Numbers 25:13). These texts show that atonement concerns turning away judgment, not merely ritual cleanness.
3. Key passages
Leviticus 17:11 gives the rationale for the whole system: “the life of the flesh is in the blood, and I have given it for you on the altar to make atonement for your souls, for it is the blood that makes atonement by the life.” Blood is not magic; it represents a life given up in death, and God himself provides it (“I have given it”). Atonement is therefore a gift of grace before it is a human work.
Isaiah 53 moves the idea from animals to a person. The Servant is “pierced for our transgressions” (53:5), the LORD lays on him “the iniquity of us all” (53:6), and his soul is made “an offering for guilt” (53:10). Jesus spoke of giving his life as “a ransom for many” (Mark 10:45).
Romans 3:25 says God “put forward” Christ Jesus “as a propitiation by his blood, to be received by faith,” so that God is both just and the justifier of the one who believes (3:26). The word hilasterion recalls the mercy seat: the place where the blood met the wrath of God is now a person.
Hebrews 9:11-14 reads Leviticus 16 directly. Christ entered “once for all into the holy places, not by means of the blood of goats and calves but by means of his own blood, thus securing an eternal redemption” (9:12). If the blood of animals purified the flesh, “how much more will the blood of Christ, who through the eternal Spirit offered himself without blemish to God, purify our conscience from dead works to serve the living God” (9:14). The letter adds that it was impossible for animal blood to take away sins (10:4) and that by a single offering Christ has perfected those being sanctified (10:14).
1 John 2:2 declares that Jesus Christ the righteous “is the propitiation for our sins, and not for ours only but also for the sins of the whole world.” And 1 John 4:10 roots this in love: God “sent his Son to be the propitiation for our sins.”
4. Theological significance
Scripture presents atonement from several angles that belong together. It is substitutionary: an innocent victim dies in place of the guilty (Leviticus 16:21-22; 2 Corinthians 5:21; 1 Peter 2:24; 3:18). It is propitiatory: God's holy wrath against sin is truly satisfied, not ignored. It is expiatory: guilt and defilement are washed away and removed. And it results in reconciliation: those who were enemies now have peace with God (Romans 5:10-11).
The initiative is always God's. He gives the blood (Leviticus 17:11), he puts forward the propitiation (Romans 3:25), and he shows his love in that while we were still sinners Christ died for us (Romans 5:8). The Old Testament rites were real means of grace for Israel, yet they were “a shadow of the good things to come” (Hebrews 10:1), repeated year after year because they could not finish the work. Christ's sacrifice is final, which is why the curtain of the temple was torn at his death (Matthew 27:51) and believers may now draw near with confidence (Hebrews 10:19-22).
5. Legacy and canonical references
The theme spans the canon: the ram provided in Isaac's place (Genesis 22:13), the Passover blood (Exodus 12:13), the priestly offerings of Leviticus, the Suffering Servant of Isaiah 53, the Gospels' passion narratives, Paul's teaching on justification, the extended argument of Hebrews 7 to 10, and the worship of the Lamb who was slain (Revelation 5:9). After the destruction of the temple in AD 70, Judaism continued to observe Yom Kippur with fasting and prayer but without sacrifice. Christian theology has explored the cross under many images, yet the biblical center remains a holy God who, in love, provides a substitute to bear the penalty of sin.
6. Application for today
Atonement answers the deepest human problem: guilt before God. No effort, ritual or good intention can remove it, but the blood of Christ can cleanse the conscience (Hebrews 9:14). The believer does not need to bring another sacrifice or try to earn forgiveness; the work is finished.
This truth also shapes daily life. It gives assurance when sin is confessed (1 John 1:9), humility because forgiveness is a gift, and freedom to serve the living God. And since Christ is the propitiation for the sins of the whole world, the message of atonement is to be proclaimed to everyone. Today, bring your sin honestly to God, rest in the sacrifice he provided and draw near through Jesus with a clean heart.