Rabbi Moshe Alshich asks, if this is so, then why isn't the Shabbos of the land , Shmita, mobile, like the Shabbos of the week? Shabbos goes everywhere with the Jews. Whether in Siberia or New , Jews keep Shabbos. But the mitzvah of Shmita if specific to Israel, no where else. If it is a replica of Shabbos then it too should "travel" to wherever a Jew farms.
The very first Rashi on the Torah explains why G-d told us the creation story at all and included it in the Torah... " To tell his people that they can answer those who claim that the Jews stole the land from it's original inhabitants. The reply should be; G-d made it and gave it to them but then took it and gave it to us. As he made it and it's his, he can give it to whoever he chooses "
I once attended a public meeting in Glasgow on " Zionism " where the main speaker was a certain Mr Michael Adams well known as a journalist with very hostile views towards the state of Israel. In the course of his talk ( Which incidentally, the Jewish rep. council had taken the trouble to warn Jews to avoid as Adams was felt to be too effective a speaker ) the words Zionist and Israeli soon became replaced by " Jews" and "The Jews" .
At one point he said " And not only did the Jews commit genocide in 1948 against the Palestinians, they merely followed in the footsteps of the Israelites who slaughtered the Canaanites who originally lived there "
I stuck my hand up and adopted the most weedy and nerd like voice I could...
" Mr Adams, Mr Adams, do you believe that G-d made the world in six days? "
Adams looked at the chairman who had accepted this question from this pathetic wimp with some impatience and replied " No of course I don't believe it "
But the Nerd continued.....
"But Mr Adams, Mr Adams it says it in the Bible !! " Adams looked pityingly
" But I don't believe in the Bible's statements " At this point I dropped the wimpish voice and said
" In that case Mr Adams where do you get the information that the Jews
massacred the original inhabitants of Canaan. You can't have it both ways.
Either the bible's account is correct and G-d told them to do it or the
account is not correct in which case they didn't massacre the inhabitants of
Canaan " Adams got considerably flustered.
The Keeping of Shmita Broadcasts to the world a simple statement, we believe that our legitimacy to the land of Israel is because G-d gave it and goes on giving it. He created it and our recognition of that fact allows us the right to occupy his tenancy.
The Talmud says that the seventy years of the first exile which followed the destruction of the Temple was the exact amount of years which the Jews failed to observe Shmita. G-d was reminding the Jews that their right to Israel is predicated on a keeping of the tenancy agreement. That is the significance of the smallest word with the biggest significance in Hebrew...IF Bechukosai begins with " IF you keep my rules ." The second paragraph of the Shema says it again " And it will be IF you listen to my laws " etc. The occupation of the land is a rolling contract between G-d and us. Keeping Shmita is the greatest pointer to that fact.