Enoch,Elijah, and Moses

According to what I understand,..it is possible that Enoch is Gentile(A respresentive of the whole Gentile race)....and Elijah we know for certain is a Jew(A representive of the whole Jewish race)........and the story about Moses is...God told Moses that he would die on his 120th birthday.
But yet,..Moses was in good health,..his eyes were not dim,..and it is believed by some that Moses was a representitive of the whole human race.It is believed that Moses died at the age of 120 years old because the 120 years were representive of 120 earth Jubulee's...which equals=6000 years that it was appointed for man to rule the earth.
Genesis 6:3
Then the LORD said, "My Spirit will not contend with man forever, for he is mortal; his days will be a hundred and twenty years."