First of all, you have no Biblical proof of Cain's or
Abel's ages at the time of the murder.
Second, you have no record of the weapon that
Cain used to murder his brother.
Third, where do you get the descendant relationship with Cain from? All human beings
who weren't following the Lord were destroyed
in the flood of Noah. Noah's family were of the
line of Seth, the 'sons of God.' The 'Cainites' were
completely would have been wiped out in the
flood.
So your entire hatred of Jews based on the Cainite
line is thoroughly trashed, biblically. Read your
Bible, and we can have differences of opinion
about it. But don't try to present your Jew-hating trash as biblical. Good-bye.