After 6 days of magically creating 350,000 species of beetles, the magic god fairy was very tired so it rested on Sunday.

Exodus 20:11

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.

This is Idiot America stuff. This bullshit explains why 40% of Americans want to throw out evolution and replace this established truth with "The Magic Man did it."