Moses Maimonides,
Epistle to Yemen [xii]
“ Wilt Thou draw out Thine anger to all generations?" (Psalms 85:6) . Isaiah, too, alluding to the long drawn out exile, declared: "And they shall be gathered together as prisoners are gathered in the dungeon, and shall be shut up in prison, and after many days shall they be released" (24:22) . Inasmuch as Daniel has proclaimed the matter a deep secret, our sages have interdicted the calculation of the time of the future redemption, or the reckoning of the period of the advent of the Messiah, because the masses might be mystified and bewildered should the Messiah fail to appear as forecast. ”
