And Moshe Emerges

In Chapter 3 of Sefer Shemot, Moshe first encounters HKBH. Note pesukim 3 & 4; Moshe says "Asurah Na Ve'Er'eh" and HKBH only speaks with him "Vayar HKBH Ki Sar Lir'ot." Moshe must first leave behind something to be able to see and connect. What is was the Moshe left behind is open for discussion...