Exodus 31:13
Speak to the children of Israel, and thou shalt say to them: See that you keep my sabbath; because it is a sign between me and you in your generations that you may know that I am the Lord, who sanctify you.
Speak to the children of Israel, and thou shalt say to them: See that you keep my sabbath; because it is a sign between me and you in your generations that you may know that I am the Lord, who sanctify you.