The only thing God declared holy out of Creation was a part of time - the Sabbath.

Life.... As we cease from labor on one day out of seven, we renew and restore our spirit by the worship of the Author of life, our Creator.

The Sabbath is sacred time that is set apart for a meeting with our heavenly Father. In order to truly benefit from sacred time, we must put an end to our striving for space. We must cease from all labor - we must stop the expenditure of life to acquire things. If life is only labor, we will have wasted it.