Musar zu Ejchah 2:18

When at the beginning of פרשת וישב, we are told that Jacob made an attempt to settle in the land of Canaan to live a quiet undisturbed life, G–d objected to Jacob at that stage wanting to enjoy both the present world and the Hereafter. This world is not slated to recover from the original sin, the time when the serpent polluted Adam and Eve, until the arrival of the Messiah. Ever since that sin our world operates on the principle that the קליפה, peel, precedes the פרי, fruit. It is this principle which forms the background of Bereshit Rabbah 2,4. We are told there by Rabbi Shimon ben Lakish that the reason that the Torah begins the story of Creation with the statement that there was Tohu Vavohu, in other words imperfection similar to the imperfection of the world experienced by the Jewish people in exile, was that imperfection has to precede perfection. The Midrash describes several such exiles as being alluded to in that verse. The word Tohu refers to the exile in Babylon; the prophet Jeremiah (4,23) describes the country thus. The word Bohu supposedly refers to the exile under the Medes, since we have a verse in Esther 6,14 where the king's messengers are described as ויבהלו להביא את המן, the word ויבהלו containing the letters of the word ובהו. The word חשך, which follows in Genesis 1,2, refers to the exile under the Greeks who blackened the eyes of Israel by demanding that the Israelites inscribe on the horns of their oxen that they had no further share in the G–d of Israel. Finally, the words על פני תהום, refer to the exile under the Romans, Edom, which seems bottomless like the תהום, Deep. When the Torah continues ורוח אלוקים מרחפת על פני המים, "The spirit of the Lord hovered over the expanse of the water," Rabbi Shimon ben Lakish views this statement as an allusion to the spirit of the Messiah of whom it was said in Isaiah 11,2 that: "the spirit of the Lord rested on him." How does one merit that the spirit of the Lord comes to rest on one? By the merit of repentance which is compared to water, as we know from Lamentations 2,18: "Fair Zion, shed tears like water day and night!"