The Bible states two reasons to keep the Sabbath. The first reason is taken from Creation. Exodus 28 states that God rested from his labors on the Sabbath. Therefore, humans, should also rest from their labor. The second reason stems from redemption. God redeemed the Israelite's from their bondage in Egypt. Therefore based on Deuteronomy 5 God's people should worship God for his acts of redemption. Historically the majority of Christians do not observe the Sabbath, which is the seventh day of the week, Saturday. Instead they tend to observe Sunday the day of Christ's resurrection, as a time of worship and rest. Enjoy your Sabbath.