12 Keep the sabbath-day to sanctify it, as the LORD thy God hath commanded thee.
Deuteronomy 5:12 Cross References - Webster
Exodus 20:8-11
8 Remember the sabbath-day to keep it holy.
9 Six days shalt thou labor, and do all thy work:
10 But the seventh day is the sabbath of the LORD thy God: in it thou shalt not do any work, thou, nor thy son, nor thy daughter, thy man-servant, nor thy maid-servant, nor thy cattle, nor thy stranger that is within thy gates:
11 For in six days the LORD made heaven and earth, the sea, and all that is in them, and rested the seventh day: wherefore the LORD blessed the sabbath-day, and hallowed it.
Isaiah 56:6
6 Also the sons of the stranger, that join themselves to the LORD, to serve him, and to love the name of the LORD, to be his servants, every one that keepeth the sabbath from profaning it, and taketh hold of my covenant;
Isaiah 58:13
13 If thou shalt turn away thy foot from the sabbath, from doing thy pleasure on my holy day; and call the sabbath a delight, the holy of the LORD, honorable; and shalt honor him, not doing thy own ways, nor finding thy own pleasure, nor speaking thy own words: