God commands a sabbath rest every week. Within the 10 commandments, God explained the reason for the sabbath rest.
Deuteronomy 5:12-15 Observe the sabbath day to keep it holy, as the LORD your God commanded you. Six days you shall labor and do all your work, but the seventh day is a sabbath of the LORD your God; in it you shall not do any work, you or your son or your daughter… so that your male servant and your female servant may rest as well as you. You shall remember that you were a slave in the land of Egypt, and the LORD your God brought you out of there by a mighty hand and by an outstretched arm; therefore the LORD your God commanded you to observe the sabbath day.
Because God mightily redeemed His people from the hands of the Egyptians, God required a sabbath rest. The One who redeems another, has the authority to command obedience. God freed the children of Israel from their bondage in Egypt and He stipulated a sabbath day rest. Does God command this amount of authority for 21st century believers? Has God redeemed His people in a similar way? Although few, if any, have been redeemed from bondage like the children of Israel, believers today have been redeemed from the grip of sin. The rest in the promised land that the children of Israel would one day receive was meant to be a picture for believers today.
Hebrews 3:5-6 Now Moses was faithful in all His house as a servant, for a testimony of those things which were to be spoken later; but Christ was faithful as a Son over His house– whose house we are, if we hold fast our confidence and the boast of our hope firm until the end.
As children of God who will partake in this rest, we demonstrate our allegiance by partaking in the sabbath rest.