From today's devotional
God commanded his people to rest and honor him on the Sabbath (7th). He wants us to serve him every day, but he wants us to make one day special when we rest and focus our thoughts on him. For the Israelites, this special day was the Sabbath (Saturday). Some Christians set Saturday aside as this special day, but many accept Sunday (the day of the week that Jesus rose from the dead) as the "Lord's Day," a day of rest and honor to God.