You shall remember that you were a slave in the land of Egypt, and the Lord your God brought you out from there with a mighty hand and an outstretched arm. Therefore the Lord your God commanded you to keep the Sabbath day. – Deut. 5:15

We were given freedom, not all at once, but in stages. Even after leaving bondage in Egypt, we were still commanded to work 6 days a week. However one day was free for us to relax and enjoy and feel holy. Similarly we were given a Jubilee Year, which occurs every 50 years, on which all slaves are freed. This commandment is the origin of the Liberty Bell quote: “Proclaim liberty throughout the land and to all the inhabitants thereof.”