Midrash su Isaia 19:12

(Ib. 3, 1) After these events. What events? Raba said: "After the Holy One, praised be He! had created [by the preceding incident] a cure in advance to their trouble which would follow, for Resh Lakish said, 'The Holy One, praised be He! afflicts not Israel before He has prepared the cure for them in advance. As it is said (Hosea 6, 11) Should I desire to heal Israel, then would the iniquity of Ephraim be laid open." But with idolatrous nations it is different. First He smites them, then He heals them, as it is said (Is. 19, 12) And the Lord will thus smite Egypt, striking and healing.' " But it appeared too contemptible in his (Haman's) eyes to lay his hand on Mordecai alone. Raba said: "In the beginning he wanted to lay hand on Mordecai alone, and later on the people of Mordecai, which refers to the scholars, and later on the Jews." Some one cast the pur, that is the lot. We have been taught in a Baraitha: When the lots fell on the month of Adar, Haman rejoiced very much, for he said: "It is the month in which Moses died." But he did not know that on the seventh of Adar Moses had died, but had also been born. And Haman said unto the king: There in one people. Raba said: "There was no man who could calumniate so well as Haman. He said to the king, 'Come, let us fight them.' And the king answered: 'I am afraid because whoever has tried to fight them was called to account by their God.' 'But they have been lazy in the performance of good deed,' Haman pleaded. Whereupon the king said: 'Nevertheless they have among them numbers of Rabbis who will pray to God for their mercy.' Haman then said: 'They are one people [and are all the same; no one observes]. And if thou shouldst think that I may depopulate thy empire [by the extermination of the Jews] thou must know that they are scattered among different nations [and it would not be perceptible] . And perhaps thou wilt say, thou derivest a benefit from them. Know that they are like mules, that are unproductive. And if thou shouldst imagine that there is one province in which "they dwell together, know that they are scattered in all the provinces of thy kingdom. And their laws are different from those of every people; i.e., they do not eat with us, drink with us, nor intermarry with us. It does not profit the king to tolerate them, because they eat and drink in a manner to disgrace the king.' "

And, behold, there came up out of the river seven kine (Gen. 41:2) After he (Pharaoh) had his dream, he summoned all his magicians. Whereupon the Holy Spirit called out: Where are they, then, thy wise men? (Isa. 19:12). Since they were unable to interpret the dream, the cup-bearer came forward and said: I make mention of my faults this day … And there was with us there a young man, a Hebrew, servant to the captain (Gen. 41:9–12). Accursed are the wicked, for even the good they do is accompanied by evil. For he said a young man, as though describing a callow youth without understanding; a Hebrew, as if to suggest that he was different from them; and a slave, an expression of contempt. Furthermore, it is written in Pharaoh”s constitution that a slave was not permitted to rule over them.