This is a misinterpretation of the Genesis passage. The 120-years is how much longer man had before God sent the Flood.
Everything was nothing before there was something.
Everything is something even if its nothing at all.
For nothingness came from Something, and that
Something has always been there.
Without an Infinite Designer, nothhing,
could not have ever been.
For even Nothing is Something;
And from Something...came everything.
~ Jason Fessenden