Question: where in the bible does it say keep the sabbath day holy?
Answer: "Remember the sabbath day, to keep it holy" (Hebrew: זָכוֹר אֶת יוֹם הַשַׁבָּת לְקַדְּשׁוֹ) is one of the Ten Commandments found in the Hebrew Bible. The full text of the commandment reads: Remember the Sabbath day, to keep it holy.