Midrasch zu Divrej Hajamim II 15:20

(Lev. 15:25:) “And when a woman has had a discharge of blood for many days.” But are there not seven days in a menstrual period? So why did it call them “many days?” Simply because she is separated from her husband and they are days of suffering, they are called “many days.” Similarly (in Exod. 2:23), “And it came to pass in the course of those many days [that the king of Egypt died].” It calls them “many days,” because they were days of suffering.³³Cf. Lev. R. 19:5. [Likewise] (I Kings 18:1) “And it came to pass in those many days that the word of the Lord came to Elijah in the third year.” And is it not that there were not [even] three years, but rather a month from the first, the whole second year and a month from the third? Simply because they were years of famine, they are called “many days.” Similarly (in Esther 1:4), “In his displaying the glory of his kingdom and the preciousness of the splendor of his greatness many days, one hundred and eighty days.” Simply because they were days of suffering, it calls them, “many days.” Similarly (in Joshua 11:18), “Joshua made war many days.” Similarly (in II Chronicles 16:3), “Israel has gone many days without the true God, without a priest to give instruction.” And [yet] it is written (Joshua 24:31), “Israel served the Lord all the days of Joshua and all of the days of the elders who had length of days.” It is simply that since they [also] worshipped idolatry, they are called, “many days.” Here too, because she is separated from her husband and they are days of suffering, they are called “many days.”

Rabbi Eliezer said: Not only concerning the water does the Scripture say that "the waters should bring forth abundantly" (Gen. 1:20), but also concerning the birds which are compared with water, as it is said, "And the uproar of many peoples, which roar like the roaring of the seas" (Isa. 17:12), and just as the waters brought forth abundantly on the fifth day, likewise in the future will the nations of the world swarm in the fifth world, and they will fight one another to destroy (one another), as it is said, "And they were broken in pieces, nation against nation, and city against city; for God did vex them with all adversity" (2 Chron. 15:6). What is written (immediately) afterwards? The Salvation of Israel (is mentioned), as it is said, "But be ye strong; and your hands shall not be slack" (2 Chron. 15:7).

Rabbi Eliezer said: Not only concerning the water does the Scripture say that "the waters should bring forth abundantly" (Gen. 1:20), but also concerning the birds which are compared with water, as it is said, "And the uproar of many peoples, which roar like the roaring of the seas" (Isa. 17:12), and just as the waters brought forth abundantly on the fifth day, likewise in the future will the nations of the world swarm in the fifth world, and they will fight one another to destroy (one another), as it is said, "And they were broken in pieces, nation against nation, and city against city; for God did vex them with all adversity" (2 Chron. 15:6). What is written (immediately) afterwards? The Salvation of Israel (is mentioned), as it is said, "But be ye strong; and your hands shall not be slack" (2 Chron. 15:7).

Rabbi Joshua ben Ḳorchah said: Art thou astonished at this? Do not be astonished, come and see, (learn) from Elisha, the son of Shaphat, for no woman was able to gaze at his face without dying; and he went from mount to mount, and from cave to cave, and he went to Shunem, and a great woman received him with great honour. She was a sister of Abishag, the Shunammite, the mother of Oded, the prophet, as it is said, "And it fell on a day, that Elisha passed to Shunem" (2 Kings 4:8), and the woman said to her husband: This man of God is (holy), no woman is able to gaze at his face without dying; but, "Let us make, I pray thee, a little chamber on the wall; and let us set for him there a bed, and a table, and a stool, and a lampstand" (2 Kings 4:10). And every time that he passes he can turn thither into the chamber, as it is said, "And it fell on a day, that he came thither, and he turned into the chamber" (2 Kings 4:11). And he called for the Shunammite, as it is said, "And he said, Call her. And when he had called her, she stood at the door" (2 Kings 4:15). Why did she stand at the door? Because she was unable to gaze at his face, so that she should not die. He said to her: