"And remember that you were a slave in the land of Egypt, and the Lord your God brought you out from there by a mighty hand and an outstretched arm; therefore the Lord your God commanded you to keep the Sabbath day." -Deuteronomy 5.15
It's wonderful that today is the seventh day of my walking, and it also falls on the first day of the week, a day of rest! Today as on all Sundays I rest from my exercise as well as other things, but it was an act of necessity to walk to church today! It was a beautiful walk, crisp and clear, with icy snow underfoot and even the bright sun not melting it. There are piles of snow everywhere, beautiful white snow and horrible grimy brown snow, but most people are resting today - not by commandment, but by requirement. God has brought the snow, and their cars and their families have to rest.
What a beautiful thing it is to rest not because we have to, but because it's a gift from God.