"Thus the heavens and the earth were completed, and all their hosts. By the seventh day God completed His work which He had done, and He rested on the seventh day from all His work which He had done. Then God blessed the seventh day and sanctified it, because in it He rested from all His work which God had created and made." (Genesis 2:1-3)
When we live without listening to the timing of things, when we live and work in twenty-four-hour shifts without rest – we are on war time, mobilized for battle. Yes, we are strong and capable people, we can work without stopping, faster and faster, electric lights making artificial day so the whole machine can labor without ceasing. But remember: No living thing lives like this. There are greater rhythms, seasons and hormonal cycles and sunsets and moonrises and great movements of seas and stars. We are part of the creation story, subject to all its laws and rhythms.
-- Wayne Muller in Sabbath: Finding Rest, Renewal, and Delight in Our Busy Lives