Moses himself is part of the Vavahari Kariality. The desert which Moses walked into was part of the waking world. But both the transactional reality and the illusory level, they are all manifestations of the absolute. In the absolute, no God, no desert, no Moses.
Swami Sarvapriyananda teaches one of the shortest and most profound upanishads accompanied by Gaudapada's Karika. This lecture covers Karika 1-5.