“The first has to do with the physical need for rest and renewing. Obviously God, who created us, would know more than we do of the limits of our physical and nervous energy and strength. The second . . . is, in my opinion, of far greater significance. It has to do with the need for regeneration and the strengthening of our spiritual being. God knows that, left completely to our own devices without regular reminders of our spiritual needs, many would degenerate into the preoccupation of satisfying earthly desires and appetites. This need for physical, mental, and spiritual regeneration is met in large measure by faithful observance of the Sabbath day.”

Source: “The Lord’s Day,” Ensign, November 1991, 35.