Deuteronomy 5:12 in the King James Version
Keep the sabbath day to sanctify it, as the LORD thy God hath commanded thee.
Context
11 “You shall not misuse the name of the LORD your God; for the LORD will not hold him guiltless who misuses his name.
12 “Observe the Sabbath day, to keep it holy, as the LORD your God commanded you.
13 You shall labor six days, and do all your work;