Tanach do Kapłańska 1:1

When Moshe would enter the Tent of Meeting to speak with Him (God), he would hear the Voice being spoken to him from above the Ark-cover which is atop the Ark of the Testimony from between the two cherubim; and He spoke to him.

And Adonoy spoke to Moshe, to say:

Adonoy spoke to Moshe in the desert of Sinai in the second year of their exodus from the land of Egypt, in the first month, saying;