SharonA,The timeline that you link to is from a PLO propaganda site full of revisionist history. If you read through it, you'll see that every inch of Israel, is occupied Palestinian territory.
The biblical passage is not relevant to this discussion because the Palestinians of today are not the non-Jews of biblical-era Palestine. The people that are today called Palestinians are Arabs. The first Arabs crossed the Jordan in the 7th Century A.D.
BTW, before 1948, it was the Jews of Palestine who called themselves "Palestinian."