Exodus 16:23-30
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.'" . . .

Exodus 31:13, 14
"Tell the Israelites, 'Surely you must observe My Sabbaths, for this will be a sign between Me and you for the generations to come, so that you may know that I am the LORD who sanctifies you. . . .

Genesis 2:3
Then God blessed the seventh day and sanctified it, because on that day He rested from all the work of creation that He had accomplished.

Leviticus 19:3
Each of you must respect his mother and father, and you must observe My Sabbaths. I am the LORD your God.

Leviticus 23:3
For six days work may be done, but the seventh day is to be a Sabbath of complete rest, a day of sacred assembly. You are not to do any work; wherever you live, it is a Sabbath to the LORD.

Isaiah 56:4-6
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-- . . .