Joseph Smith

“We conclude that whenever the Lord revealed Himself to men in ancient days, and commanded them to offer sacrifice to Him, that it was done that they might look forward in faith to the time of His coming, and rely upon the power of that atonement for a remission of their sins. And this they have done, thousands who have gone before us, whose garments are spotless” (Teachings of Presidents of the Church: Joseph Smith, p. 49).