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.