Through his death on the cross, Christ atoned for sin and so reconciled people to God. New Testament authors drew upon a range of metaphors and motifs to describe this salvific act, and down through history Christian thinkers have tried to articulate various theories to explain the atonement. While Christ’s sacrifice serves as a central tenet of the Christian faith, the mechanism of atonement—exactly Christ effects our salvation—remains controversial and ambiguous to many Christians.