Rashi notes that the word “medaber,” “speaking,” is similar to “misdaber,” in the hispa’el, reflexive form of the verb, implying that Moshe heard the voice of Hashem speaking to Itself. Sforno expands on this idea, suggesting that actually Hashem “makes it known to Himself.” Thus, the voice that Moshe heard was actually an “overflow” of Hashem’s words. In other words, the concept of Hashem “speaking” to Moshe is not of the same nature as that of conversation as between two people. Hashem Yisborach “speaks” to Himself, so to speak, and Moshe “overhears” what is said. Horav Moshe Feinstein, zl, states…
