You may want to bone up on your history a bit. There was a Jewish presence complete with government and institutions going back to 1312  years before Jesus. That is incontestable. Most of Europe is configured differently today than it was 100 years ago, and 100 years before that. Texas and California were not always part of the USA, which at one point didn't exist at all. 

Lands have been reconfigured since man first sharpened a stick, and will doubtless continue to be for the foreseeable future.  Israel isn't taking anything that didn't belong to it at one point, and by the way, how do you suppose the Mohammedans came into control of the neighbourhood in the 7th Century - did they not oust the then current inhabitants? 

No Islamist group has ever had Jerusalem as its capital, yet the Jews have had a continued presence there for 3,300 years. There is tons of historical evidence to this effect, and you can't steal what is rightfully yours.