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.
And the whole earth was of one language...
Go to, let us go down,
and there confound their language,
that they may not understand one another's speech.
Restored to what it was in the beginning--to ONE Language
For then will I turn to the people a pure language,
that they may all call upon the name of the LORD,
to serve him with one consent.