Biblical key doctrines have their roots in Genesis 1-11. This is why these chapters should be defended by Christians---not undermined or ignored by them.
In the beginning God created the heaven and the earth.
And on the seventh day God ended his work which he had made;
and he rested on the seventh day from all his work which he had made.
And God blessed the seventh day, and sanctified it:
Genesis 1:1/2:2,3