The Ten Commandements - God spoke, and these were his
4. Observe the Sabbath and keep it holy. You have six days in which to do your work, but the seventh day is a day of rest dedicated to me. On that day no one is to work - neither you, your children, your slaves, your animals, nor the foreigners who live in your country. In six days I, the Lord, made the earth, the sky, the sea, and everything in them, but on the seventh day I rested. That is why I, the Lord, blessed the Sabbath and made it holy.
Exodus 20 : 1 - 17