Exodus 12:16
On the first day you are to hold a sacred assembly, and another on the seventh day. You must not do any work on those days, except to prepare the meals--that is all you may do.

Exodus 16:23
He told them, "This is what the LORD has said: 'Tomorrow is a day of solemn rest, a holy Sabbath to the LORD. So bake what you want to bake, and boil what you want to boil. Then set aside whatever remains and keep it until morning.'"

Numbers 15:32
While the Israelites were in the wilderness, a man was found gathering wood on the Sabbath day.

Isaiah 58:13
If you turn your foot from breaking the Sabbath, from doing as you please on My holy day, if you call the Sabbath a delight, and the LORD's holy day honorable, if you honor it by not going your own way or seeking your own pleasure or speaking idle words,