Exodus 20: 8-10 NKJV “Remember the Sabbath day by keeping it holy. Six days you shall labor and do all your work, but the seventh day is a Sabbath to the Lord your God. On it you shall not do any work…
For in six days the Lord made the heavens and the earth, the sea, and all that is in them, but he rested on the seventh day. Therefore the Lord blessed the Sabbath day and made it holy.”
Exodus 20: 11 NKJV
Notice the God did not tell us to work 6 thousand years and rest for a thousand years! The reference is to a calendar work week of seven literal days which match those time frames at creation.