Contemporary colloquy is monopolised by our proofs of God. There is much less attention on God’s proof of his own existence. Few understandably have had the audacity to petition God to prove his being. The most iconic instance occurs in Moses’ encounter in Exodus 3. Moses asks God, tangentially, for proof, euphemising with the term “name”. Ironically hermeneutics have obfuscated the very answer; which is as much a proof, as it is a response to Moses’ question. God’s own proof cannot rely on that subordinate to him, namely creation, it must therefore be self-referential. Secondly it must be self-evidently true, axiomatic, irrefragable and of incontrovertible historicity. It must be an Autoapodixs. This Theoautoapodixis must be synchronous to persuade contemporaries but equally metachronous to convince future generations. Herein it is shown that God achieves the impossible Autoapodixis when Moses seeks proof. The name given to Moses and his contemporaries is “I AM THAT I AM”, although it is potentially inclusive of multiple other tenses. However in Modern Hebrew the same word has the singular meaning “I SHALL BE THAT I SHALL”. Hence, at a single point in time Moses asks God for proof. To Moses and his peers he says his name and his proof is “I AM THAT I AM” AND at that time in history, speaking to those in the future, who will also ask the same question and read the text, he says “I SHALL BE THAT I SHALL BE” even before “I SHALL BE” means “I SHALL BE”. This is the Autoapodixis. This proof also tessellates with the previously articulated intriguing hypothesis that during the Transfiguration there was a coalescence time and the disciples saw Jesus speaking to Moses and Elijah in the past. We also evince and epiphanise a Marian apodixis.