Isaiah 58:13

Isaiah 56:2-6 NIV
Blessed is the one who does this— the person who holds it fast, who keeps the Sabbath without desecrating it, and keeps their hands from doing any evil.” Let no foreigner who is bound to the Lord say, “The Lord will surely exclude me from his people.” And let no eunuch complain, “I am only a dry tree.” For this is what the Lord says: “To the eunuchs who keep my Sabbaths, who choose what pleases me and hold fast to my covenant — to them I will give within my temple and its walls a memorial and a name better than sons and daughters; I will give them an everlasting name that will endure forever. And foreigners who bind themselves to the Lord to minister to him, to love the name of the Lord, and to be his servants, all who keep the Sabbath without desecrating it and who hold fast to my covenant—

Nehemiah 13:15-22 NIV
In those days I saw people in Judah treading winepresses on the Sabbath and bringing in grain and loading it on donkeys, together with wine, grapes, figs and all other kinds of loads. And they were bringing all this into Jerusalem on the Sabbath. Therefore I warned them against selling food on that day. People from Tyre who lived in Jerusalem were bringing in fish and all kinds of merchandise and selling them in Jerusalem on the Sabbath to the people of Judah. I rebuked the nobles of Judah and said to them, “What is this wicked thing you are doing—desecrating the Sabbath day? Didn’t your ancestors do the same things, so that our God brought all this calamity on us and on this city? Now you are stirring up more wrath against Israel by desecrating the Sabbath.” When evening shadows fell on the gates of Jerusalem before the Sabbath, I ordered the doors to be shut and not opened until the Sabbath was over. I stationed some of my own men at the gates so that no load could be brought in on the Sabbath day. Once or twice the merchants and sellers of all kinds of goods spent the night outside Jerusalem. But I warned them and said, “Why do you spend the night by the wall? If you do this again, I will arrest you.” From that time on they no longer came on the Sabbath. Then I commanded the Levites to purify themselves and go and guard the gates in order to keep the Sabbath day holy. Remember me for this also, my God, and show mercy to me according to your great love.