Tractate Shabbat (folio 66, column 2) preserves something most modern readers will find startling: a rabbinic prescription against fever that is half incantation, half midrash. The healers are Rav Huna and Rabbi Yochanan, and the method weaves verses from Exodus into a three-day ritual.
For a burning fever, Rabbi Yochanan said this. Take an iron knife. Tie a papyrus fibre to the nearest bramble bush. On the first day, cut off a piece of the fibre and recite: "The angel of the Lord appeared to him in a flame of fire out of the midst of a bush" (Exodus 3:2).
On the second day, cut another piece and say: "And the Lord saw that he turned aside to see" (Exodus 3:4) — but read the word so it means the fever has turned aside.
On the third day, cut a final piece and say: "Draw not near to this place" (Exodus 3:5). Then bend down and address the bramble directly: "Bramble, bramble, the Holy One, blessed be He, caused His Shekhinah to dwell upon you not because you are the loftiest of trees, but because you are the lowest. And as you saw the fire of Hananiah, Mishael, and Azariah (Daniel 3) and fled from it, so see the fire of this sufferer and flee from it."
The ritual is peculiar, but its theology is pure Torah: every fever is a small exile, and the cure is the memory that God once came down into the lowest bush in the desert.