'Observe the Sabbath' in the Bible

Be careful to observe the Sabbath day just as the Lord your God has commanded you.

Recall that you were slaves in the land of Egypt and that the Lord your God brought you out of there by strength and power. That is why the Lord your God has commanded you 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 began to say, "This man is not from God, because he does not observe the Sabbath." But others said, "How can a man who is a sinner perform such miraculous signs?" Thus there was a division among them.