Exodus 31:13

13“Say to the Israelites, ‘You must observe my Sabbaths. This will be a sign between me and you for the generations to come, so you may know that I am the Lord, who makes you holy.

13“Now as for you, speak to the sons of Israel, saying, ‘You must keep My Sabbaths; for this is a sign between Me and you throughout your generations, so that you may know that I am the Lord who sanctifies you.

13“But as for you, speak to the sons of Israel, saying, ‘You shall surely observe My sabbaths; for this is a sign between Me and you throughout your generations, that you may know that I am the Lord who sanctifies you.

13“But as for you, say to the Israelites, ‘You shall most certainly observe My Sabbaths, for it is a sign between Me and you throughout your generations, so that you may know [without any doubt] and acknowledge that I am the Lord who sanctifies you and sets you apart [for Myself].

13“Tell the Israelites, ‘Surely you must keep My Sabbaths, for this will be a sign between Me and you for the generations to come, so that you may know that I am the Lord who sanctifies you.

13He said, “Tell the people of Israel, ‘You must always keep my Sabbath days. That will be the sign of the covenant I have made between me and you for all time to come. Then you will know that I am the Lord. I am the one who makes you holy.