Rashi on Ki Sisa 33:9

English: ודבר עם משה — This means the same as ומדבר עם משה AND HE USED TO SPEAK WITH MOSES (The verb ודבר expresses the idea of an action always going on as Rashi has explained the preceding verbs). The Targum renders it by ומתמלל עם משה (Hithpeal) i. e. He used to speak to Himself with (in the presence of) Moshe — which is an expression of respect used with reference to the Shechinah. A similar Hebrew expression is, (Numbers 7:89) “Then he heard the voice מִדַּבֵּר to him” (= מתדבר, with assimilated ת), and it does not read there, מְדַבֵּר, “speaking to him”. Where the reading is מִדַּבֵּר its interpretation is: The voice was speaking by itself (i. e. it was not directed to any particular person) an