John Murray on the Atonement

Sin involves guilt and the death of Christ as a sacrifice is the provision for our guilt.  Sin evokes the wrath of God and propitiation is that which propitiates the wrath of God.  Sin alienates us from God and reconciliation is directed to that exigency arising from sin.  Sin consigns us to bonadage, bondage to sin itself and to Satan.  Redemption is the provision for this bondage, the death of Christ is our ransom. John Murray, Collected Works, 1:38