Well, the idea that Palestine belonged to the Jews 3000 years ago is interesting. But true or not, it doesn't mean a lot today. Imagine the chaos that would come of redrawing maps and reestablishing ownership to the original claimants as things were thousands of years ago. If Israel can do that, why not anyone else? The Native Americans could claim the US, Canada, and Mexico. Australia would be returned to the Bushmen, and on and on for every ethic group. I would lose my home to the Chicahoo Tribe, or whatever tribe it was that camped on what is now my property at some arbitrary point in history that everyone would be in magical agreement over.
Someone posted some interesting interactive maps of the world a month ago. They point out the constant change that has been an integral part of political borders throughout history. More powerful countries have always claimed parts of other countries as their own, and new ownership is established. If the Jews had never left Israel, as myth suggests they did, someone else was going to move in and claim it, but the Jews claim Israel and whatever else they want to claim as Israel still belongs to them. And in the case of Israel ownership is being claimed on hollow Biblical authority. Every political group, including the Jews, owns what it owns for no other reason than they own it now. And of course, that can always change.
But the claim that God has given some land to a particular group is silly beyond imagination. That's not how things work. Sure, anyone can make that claim, and groups might do that, and I can hear the fundamentalists whine now: "There is no affidavit that is more sacred than the Bible. That is the deed of trust." Yeah right. Tell that to the County Clerk and Recorder.