Narnian Vision of the Atonement

How can we have redemption or atonement (at-one-ment) with God? Ancient Christians proposed a ransom theory, according to which God pays the ransom for us through heroic self-sacrifice so we can be liberated from the power of the demonic, sin, and death. This theory is widely rejected by philosophers and theologians, yet C. S. Lewis boldly portrays atonement in precisely such terms in his seven-vo...