'Observe the Sabbath' in the Bible

Observe the Sabbath, for it is holy to you. Whoever profanes it must be put to death. If anyone does work on it, that person must be cut off from his people.

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

Observe the sabbath day, to keep it holy, as Jehovah thy God commanded thee.

And thou shalt remember that thou wast a bondman in the land of Egypt, and that Jehovah thy God brought thee out thence with a powerful hand and with a stretched-out arm; therefore Jehovah thy God hath commanded thee to observe the sabbath day.

The people who do this will be blessed, the people who commit themselves to obedience, who observe the Sabbath and do not defile it, who refrain from doing anything that is wrong.

As for foreigners who become followers of the Lord and serve him, who love the name of the Lord and want to be his servants -- all who observe the Sabbath and do not defile it, and who are faithful to my covenant --

You must observe the Sabbath rather than doing anything you please on my holy day. You must look forward to the Sabbath and treat the Lord's holy day with respect. You must treat it with respect by refraining from your normal activities, and by refraining from your selfish pursuits and from making business deals.

Do not carry any loads out of your houses or do any work on the Sabbath day. But observe the Sabbath day as a day set apart to the Lord, as I commanded your ancestors.

Then some of the Pharisees said, “This Man [Jesus] is not from God, because He does not keep the Sabbath.” But others said, “How can a man who is a sinner (a non-observant Jew) do such signs and miracles?” So there was a difference of opinion among them.