English Standard Version
“You are to speak to the people of Israel and say, ‘Above all you shall keep my Sabbaths, for this is a sign between me and you throughout your generations, that you may know that I, the LORD, sanctify you.

American Standard Version
Speak thou also unto the children of Israel, saying, Verily ye shall keep my sabbaths: for it is a sign between me and you throughout your generations; that ye may know that I am Jehovah who sanctifieth you.

Berean Study Bible
“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.

Douay-Rheims Bible
Speak to the children of Israel, and thou shalt say to them: See that thou 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.

English Revised Version
Speak thou also unto the children of Israel, saying, Verily ye shall keep my sabbaths: for it is a sign between me and you throughout your generations; that ye may know that I am the LORD which sanctify you.

King James Bible
Speak thou also unto the children of Israel, saying, Verily my sabbaths ye shall keep: for it is a sign between me and you throughout your generations; that ye may know that I am the LORD that doth sanctify you.

World English Bible
"Speak also to the children of Israel, saying, 'Most certainly you shall keep my Sabbaths: for it is a sign between me and you throughout your generations; that you may know that I am Yahweh who sanctifies you.

Young's Literal Translation
And thou, speak unto the sons of Israel, saying, Only, My sabbaths ye do keep, for it is a sign between Me and you, to your generations, to know that I, Jehovah, am sanctifying you;

Exodus 31:13 Additional Translations ...