Musar zu Dewarim 27:14

I have seen the following very pertinent comment in Tzror Hamor on the words אזכיר את שמי. "G–d says אזכיר instead of תזכיר. This indicates that it is G–d who mentions His name, not the High Priest. Even though, technically, the High Priest utters the name of G–d in the Holy Temple, it is G–d who causes these letters to be put in the mouth of the High Priest. Once they have been placed in his mouth, the High Priest utters them in the order that makes them form the Ineffable Name. This is also what is meant when the Jerusalem Talmud discusses the meaning of Deuteronomy 27,14, where the Levites are told to pronounce the blessings, etc. בקול רם, "with a loud voice." The words בקול רם must be understood as "with the voice of the exalted, the high One." This teaches that G–d reinforced the voice of the Levites; He put the words in their mouths while they uttered them. It is very similar to Exodus 19,19 where Moses is reported as משה ידבר והאלוקים יעננו בקול. Here too we have to understand this as G–d putting the words in Moses' mouth which he was supposed to say.