ייִדישער מחשבֿה אויף זכריה 14:16

In fact, the moral lesson of the observance of sukkot is such that the prophet (Zecharyah 14,16-end) describes it as the mitzvah which in messianic times will be mandatory for all nations to observe. Non observance by any nation at that future time would result in that nation being deprived of the means of its livelihood, of its physical existence. Thus, our concept that observance of this mitzvah signals our readiness to subordinate the amassing of material wealth to the accumulation of spiritual values, seems born out. In those days it will be the homage paid to G'd by the nations that have survived the onslaught on Jerusalem, that will display their spiritual maturity by observing the festival of Sukkot.