So come, I will send you to Pharaoh to bring my people, the Israelites, out of Egypt.” But Moses said to God, “Who am I that I should go to Pharaoh, and bring the Israelites out of Egypt?” He said, “I will be with you; and this shall be the sign for you that it is I who sent you: when you have brought the people out of Egypt, you shall worship God on this mountain.”
—Exodus 3.10-12

So…what’s God’s proof that He is with Moses and He is the one behind all this?

Not the mystical voice from the fire.
Not the miracles nor plagues.

Moses will know that God is real and he is the one that did all this only after deliverance and wilderness, having returned to where he started, utterly transformed.

Ain’t that the truth?

See other Marginalia here. Read more about the series here.