What Is the Hope That the Temple Could Be Rebuilt?

There are some indications that there was a sort ofsort of sudden excitement that may be now the temple would be rebuilt. And that slowly, slowly, that the non appearance of the new temple leads to growing frustration. Then you get barcoba, who is another cosy, kind of messianic figure of sorts,. trying to to force the hand of history, as it were. This leads to the kind of second devastation of jerusalem and the transformation of jerusalem into a roman colony called elia capitalina.