How large percentage of the population of ancient Israel/Judea were Jewish (that is, belonged to the Jewish religion)? Also, I wonder, how large percentage of the Jewish population was expelled by the Romans. I sometimes see claims that the area was more or less totally cleansed of people and that only a very small Jewish population stayed, mainly in Galilee. I would assume that a large part, probably a large majority, eventually converted to Christianity and stayed. The claim that the whole area was totally cleansed of people seems very unlikely. Most likely it was the more radical elements and religious leaders who were expelled.