Genesis 2:3 And God blessed the seventh day, and sanctified it: because that in it he had rested from all his work which God created and made.But Genesis 2:3 still stands.
Just as a pont of interest, Genesis 2:3 does not use the word "Sabbath". Indeed the word "sabbath" is not used anywhere in Genesis, It is not until the giving of the Law to Israel does the Scripture identify the seventh day (yom HaSheb-ee-ee) as the Sabbath (Ha Shabbat). It is not until the giving of the Law to Israel is there any detail given concerning how the Sabbath is to be kept.
HankD