Exodus 33:23

והסרתי את כפי AND I WILL REMOVE MY HAND — The Targum renders this by ואעדי ית דברת יקרי “I will remove the guidance of My Glory”; it means: when I shall remove the guidance of My Glory from before thine eyes — to go right away from that place, וראית את אחרי THEN THOU SHALT SEE WHAT IS BEHIND ME — He showed him the Tephillin-knot which is placed behind the head (cf. Berakhot 7a; Menachot 35b).

וַהֲסִרֹתִי֙ אֶת־כַּפִּ֔י וְרָאִ֖יתָ אֶת־אֲחֹרָ֑י וּפָנַ֖י לֹ֥א יֵרָאֽוּ׃ {פ}*(ספק פרשה סתומה בכתר ארם צובה)

and I will take away my hand and thou shalt see my back: but my face shall not be seen.