Midrash sobre Números 11:25

The master said above: "All the seventy had prophesied once, and ceased; but these two did not cease to prophecy." Whence do we infer this? Shall we assume it from the following passage (Num. 11, 25) They prophesied V'lo yassoff, which means they never prophesied again. If so, then how will you explain the passage (Deut. 5, 19) "With a great voice V'lo yassoff?" Does this also mean that it was never heard again? [The Shechina was surely heard in later times]. We must therefore say Yassoff means "not ceased;" if so, then the above inference is gone! We infer it from this passage: "And they prophesied [in the past] while concerning Eldad and Medad it is written, "are prophesying" [present tense]. In regard to the statement that their prophecy was "Moses shall die," it is readily understood, for it is written (Num. 11, 28) My Lord Moses, forbid them. But according to him who said they prophesied about other things, why, then, should they be forbidden? Because it was not seemly for them thus to prophesy in the presence of Moses, which appears as if a scholar decides a question in the presence of his teacher. What is meant by the words, forbid them? He said to Moses: "Throw upon them the care for the public, and they will cease [to prophesy] by themselves."

THE SIN OF ADAM AND EVE
TEN descents upon the earth were made by the Holy One, blessed be He; they were: (1) Once in the Garden of Eden; (2) once at (the time of) the generation of the Dispersion; (3) once at Sodom; (4) once at the thorn-bush; (5) once in Egypt; (6) once at Sinai; (7) once at the cleft of the rock; (8) and (9) twice in the tent of Assembly; (10) once in the future.