In this booklet, Charles Spurgeon explains that our salvation as believers consists of two parts. The first is that Christ, as our penal substitute, obtained for us forgiveness of sins by His sacrifice on the cross. The second, and less commonly understood, is that we receive the righteousness of Christ based on His perfect obedience to the law. Spurgeon describes it this way, "We therefore assert, believing that Scripture fully warrants us, that the life of Christ constitutes the righteousness in which His people are to be clothed. His death washed away their sins, His life covered them from head to foot; His death was the sacrifice to God, His life was the gift to man, by which man satisfies the demands of the law."