'Keep the Sabbath' in the Bible

You shall keep the sabbath therefore; for it is holy unto you: every one that defiles it shall surely be put to death: for whosoever does any work on it, that soul shall be cut off from among his people.

Therefore the children of Israel shall keep the sabbath, to observe the sabbath throughout their generations, for a perpetual covenant.

Keep the sabbath day to sanctify it, as the LORD your God has commanded you.

And remember that you were a servant in the land of Egypt, and that the LORD your God brought you out from there by a mighty hand and by an outstretched arm: therefore the LORD your God commanded you to keep the sabbath day.