According to Christ’s original doctrine as restored through Joseph Smith, the Fall made both possible and necessary the Savior’s atoning for our sins. Human nature is neither inherently evil nor inherently good. We become evil or good based on interaction between the Lord’s influence and the choices we make-choices unavailable in the garden before Adam and Eve fell and only made possible because of the Savior’s atonement.
In fulfillment of his intended purpose, God expelled Adam and Eve from Eden into a world that was subject to the forces of life and death, good and evil. Yet He soon taught them that “the Son of God hath atoned for original guilt”; therefore, Adam’s children were neither evil nor good but were “whole from the foundation of the world.” (Moses 6:54; emphasis added.) Thus, “every spirit of man was innocent in the beginning; and God having redeemed man from the fall, men became again, in their infant state, innocent before God.” (D&C 93:38; emphasis added.) (Elder Bruce C. Hafen, The Restored Doctrine of the Atonement, Ensign, December 1993).