We must honor God not only by our loyalty (first commandment) and thought-life (second commandment) and words (third commandment), but also by our use of time, in a rhythm of toil and rest; six days for work crowned by one day for worship. God’s claim on our Sabbaths reminds us that all our time is his gift, to be given back to him and used for him.

– J. I. Packer in Growing in Christ