"God does not propose to try to bring goodness out of evil, and He never will call evil good. What He proposes to do is to create a new heart in man, so that good can come from it. “For we are His workmanship, created in Christ Jesus unto good works, which God hath before ordained, that we should walk in them” (Eph. 2:10)." Ellet J. Waggoner
It was Christ who blessed and sanctified the seventh day. Since it was by him that all things were created, it is evident that he must also have rested at the close of the six days of creation. He created, he rested, he blessed, and he sanctified.
Therefore the blessing of the Sabbath day is the blessing of Christ. The blessing of Christ is to turn man away from iniquity. Acts 3:26. The Sabbath, therefore, is for the purpose of turning man away from their sins.
We are reconciled to God by the death of Christ, and saved by His life. The life, which does this, is the life from which all created things came, and by which they exist. The power of redemption is the power of creation, and that is the power of the life of Christ. The Sabbath is a great memorial of the wonderful works of God, which are the measure of His graciousness. He gave it that we might know that He is the Lord that sanctifies us.