R. Eliezer Hamodai says: "And the dew layer ascended": (homiletically) there arose the prayers of our forefathers who were buried in the earth, on the face of the ground. "and, behold, on the face of the desert": Not on the whole desert, but on part of it. "dak like hoarfrost": It descended from the firmament, as it is written (Isaiah 40:22) "… who stretches out the heavens like dak." Since it descended from the firmament, I might think it descended cold. It is, therefore, written "cham" ("warm" [i.e., the samech in mechuspas looks very much like a mem]). I might think it descended with a great din. Whence is it derived that it descended silently? It is, therefore, written "hass" ("hush" [i.e., the cheth in mechuspas reads very much like a heh]). I might think that it descended on vessels. Whence do I derive that it descended only on the ground? From "as hoarfrost upon the ground."