וְדִבֶּ֨ר יְהוָ֤ה אֶל־מֹשֶׁה֙ פָּנִ֣ים אֶל־פָּנִ֔ים כַּאֲשֶׁ֛ר יְדַבֵּ֥ר אִ֖ישׁ אֶל־רֵעֵ֑הוּ וְשָׁב֙ אֶל־הַֽמַּחֲנֶ֔ה וּמְשָׁ֨רְת֜וֹ יְהוֹשֻׁ֤עַ בִּן־נוּן֙ נַ֔עַר לֹ֥א יָמִ֖ישׁ מִתּ֥וֹךְ הָאֹֽהֶל׃ (ס)
And the LORD spoke unto Moses face to face, as a man speaketh unto his friend. And he would return into the camp; but his minister Joshua, the son of Nun, a young man, departed not out of the Tent.
Read kabbalistic (mystical) interpretation of Exodus 33:11: and classical mystical sources.