I will go back 2,000,000 bc with my 10,000 wifes and private army. I repopulate earth with my descendants. I will change history. 
Oh.. please no. The earth can't afford a billion inbred people with genetic disorders. You better pack off to some other planet (Mars, may be. Neptune is also another option) with your descendants.
Seriously those Israelites came from one family right? Are those jews inbred?