Another interpretation: He speaks of Moses, with whom He spoke by speech and by vision, as it is said, "Mouth to mouth I speak with him" (Numbers 12:8). "To Your pious one" (Psalms 89:20), for he was of the tribe of Levi, as it is said, "And of Levi he said: Your Tummim and Your Urim be with Your pious one" (Deuteronomy 33:8). "And You said, I have set help upon a mighty one" (Psalms 89:20): a load too heavy for six hundred thousand was easy for Moses. "I have exalted one chosen from the people" (Psalms 89:20). "Had it not been for Moses His chosen one" (Psalms 106:23).
Moses Who Was Spoken With Mouth to Mouth
Yalkut Shimoni on Torah 427:3
דָּבָר אַחֵר מְדַבֵּר בְּמֹשֶׁה שֶׁנִּדְבַּר עִמּוֹ בְּדִבּוּר וּבְחָזוֹן, שֶׁנֶּאֱמַר "פֶּה אֶל פֶּה אֲדַבֵּר בּוֹ" לַחֲסִידֶיךָ שֶׁהָיָה מִשִּׁבְטוֹ שֶׁל לֵוִי, שֶׁנֶּאֱמַר (דברים לג, ח) "וּלְלֵוִי אָמַר תֻּמֶּיךָ וְאוּרֶיךָ לְאִישׁ חֲסִידֶךָ". "וַתֹּאמֶר שִׁוִּיתִי עֵזֶר עַל גִּבּוֹר", מַשְּׂאוֹי שֶׁקָּשֶׁה לְשִׁשִּׁים רִבּוֹא נוֹחַ לְמֹשֶׁה, (תהלים פט, כ) "הֲרִימוֹתִי בָחוּר מֵעָם", (שם קו, כג) "לוּלֵי מֹשֶׁה בְחִירוֹ".