Genesis 2:2; Exodus 31:16; Leviticus 23:3

Genesis 2:2

2 By the seventh day God had finished the work he had been doing; so on the seventh day he rested from all his work.

Exodus 31:16

16 The Israelites are to observe the Sabbath, celebrating it for the generations to come as a lasting covenant.

Leviticus 23:3

3 “ ‘There are six days when you may work, but the seventh day is a day of sabbath rest, a day of sacred assembly. You are not to do any work; wherever you live, it is a sabbath to the LORD.