'Sabbath day' in the Bible

As for the peoples of the land who bring wares or any grain on the sabbath day to sell, we will not buy from them on the sabbath or a holy day; and we will forego the crops the seventh year and the exaction of every debt.

In those days I saw in Judah some who were treading wine presses on the sabbath, and bringing in sacks of grain and loading them on donkeys, as well as wine, grapes, figs and all kinds of loads, and they brought them into Jerusalem on the sabbath day. So I admonished them on the day they sold food.

Then I reprimanded the nobles of Judah and said to them, “What is this evil thing you are doing, by profaning the sabbath day?

It came about that just as it grew dark at the gates of Jerusalem before the sabbath, I commanded that the doors should be shut and that they should not open them until after the sabbath. Then I stationed some of my servants at the gates so that no load would enter on the sabbath day.

And I commanded the Levites that they should purify themselves and come as gatekeepers to sanctify the sabbath day. For this also remember me, O my God, and have compassion on me according to the greatness of Your lovingkindness.