"Why did
the Creator set up this memorial in paradise? 
Why did He set apart from
the other days of the week that day which He had employed in rest?
"Because that in it," says the record, "He had rested from all His work
which God created and made."
--A rest necessarily implies a work performed.
--And hence the Sabbath was ordained of God as a memorial of the work of
creation."
J.N. Andrews/Genesis 2:3