מוסר אויף בראשית 32:8

The entire nation is considered as if it were one person; this is why the Torah refers to the people as נפש, person (singular) already at the time Jacob descended into Egypt (Genesis 46,26, et al.). The significance of this lies in the fact that כי חלק ה' עמו, "that His people Israel are part of G–d Himself" (32,9). The remainder of mankind was divided into 70 nations, each one with a representative in the Celestial Regions, i.e. a horoscope presided over by a שר, "Minister," as we know from 4,19: "which the Lord your G–d assigned to all the nations; He took you and removed you from the iron crucible, from Egypt, to be for Him His very own nation, as is now the case" (4,20). The Jewish people's fortunes are not guided by intermediaries such as horoscopes. The 70 nations were divided from one another as we know from 32,8: "When the most High gave nations their homes and set the divisions of man, He fixed the boundaries of peoples in relation to Israel's numbers." The relationship (common denominator) between the "numbers" of Israel and that of the nations of the world is that Israel numbered 70 when they first went down to Egypt. The difference is only that the 70 Israelites that came to Egypt are all described as נפש, a single person. Any part of the Jewish nation is compared to the entire nation. Because Israel is part of G–d, it has an eternal future, as pointed out in Sanhedrin 90a: "Every Israelite has a share in the World to Come."

"He was afraid and distressed;" the former was due to Jacob's fear that the accuser in the Celestial Regions might have come across sins committed by Jacob that he had not been aware of. He was also afraid that Esau's merit in having performed the commandment of honouring father and mother during all the years Jacob had not performed it might now support him. We find that Moses too was afraid before engaging Og, King of Bashan, in battle, fearing that the merit of Abraham might assist Og, as explained by Rashi on Numbers 21,34. [The merit of Og referred to must be that he became instrumental in Abraham saving Lot, by having told him that the latter had been taken prisoner, even though that had hardly been Og's motive, as Rashi himself explains on Genesis 14, 13. Ed.] Bereshit Rabbah 76, 1, quoting Rabbi Pinchas, understands our verse in a similar vein. "There were two people who had received specific assurances from G–d, and still they were reported as being afraid. One is the choicest of the patriarchs, Jacob, to whom G–d had said: "I shall be with you;" in the end we nonetheless find him afraid of his upcoming encounter with Esau, seeing the Torah says: ויירא יעקב. The other person was the choicest of the prophets, Moses. G–d had told him "for I shall be with you" (Exodus 3,12). Still, we find G–d had to tell him in Numbers 21: "Do not be afraid of him (Og)." G–d certainly would not have bothered to reassure Moses had he not been afraid, (though the Torah did not report this as a fact). Thus far the Midrash.

This is the meaning of the verse, “And Mordechai knew” (Esther 4:1). That is, he knew the essence of the matter — that the decree had been issued on account of the great harm they had done to the Shechinah when they benefited from the feast of that evildoer. Therefore it states, “And Mordechai donned sackcloth and ashes and cried out with a great and bitter cry.” “And he donned sackcloth” — This was to atone for the sin and to weaken the power of the “four hundred men” who accompanied Eisav when he came to meet his brother Yaakov. For it is stated concerning this event, “And Yaakov was very afraid” (Bereishis 32:8). That is, he was afraid of the four hundred impure husks and destroyers that accompanied Eisav. This is why Mordechai donned sackcloth, because the numerical value of the word “sackcloth” [שׂק] is 400. Thus his intention was to weaken the power of the wicked Eisav. Then Mordechai informed also Esther of the great harm that had been done at the feast of Achashveirosh. Therefore it states immediately after this, “And Esther donned ‘kingship’” (Esther 5:1). That is, she donned the spirit of prophecy (Megillah 14b). Esther then proposed that they fast for three days and three nights in order to counteract the filth that Haman and Achashveirosh had injected into them by means of their feast. In this way the power of the filth that had sullied them through that eating and drinking would be enfeebled, for it was weakened through their fasting, thereby enabling the collective soul of Israel to shine as before.