What are you talking about? What creation myth? Do you know what is commandment to remember the Sabbath day? It's a commandment to remember God's creation, as described to us by God, even within the commandment itself.
God gave commandments, as written in Exodus 20, starting with words "I am the Lord your God, who brought you out of Egypt, out of the land of slavery."
Then He gives commandment to: "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, neither you, nor your son or daughter, nor your male or female servant, nor your animals, nor any foreigner residing in your towns. 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."
Because you type science with capital S, you just discard part of commandment you don't like?