Who is the most-powerful being in the Marvel Multiverse? It’s not Spiderman, Iron Man, Thor, or Thanos, but someone called “the One Above All.” Here’s how he makes his appearances in the universe:

Appearances of the One Above All are few and far between. The deity sometimes appears as a blinding white light, or a nondescript homeless man. However, one of the most notable sightings of the being was seen in Fantastic Four #511. Traveling through a realm that could only be described as heaven, the four pass through a door and emerge in an ordinary living room. Before them sits the One Above All, sketching comic panels and characters on a drawing board--and he bears a striking resemblance to the legendary artist Jack Kirby.

As the co-creator of the Fantastic Four, Captain America, Spider-Man, Thor, Black Panther, the X-Men, and countless other characters over the decades, Jack Kirby is an ideal representation of the God of the Marvel Universe. Even so, he takes a phone call from a "collaborator" in a later panel (heavily hinted to be Stan Lee), much to the amazement of the Fantastic Four.

Marvel's depiction of the One Above All as a simple human artist works perfectly within their universe. As the OAA-as-Jack Kirby himself says "That's what my creations do. They find the humanity in God.”

Possible Preaching Angle:

Often when humans imagine God, they imagine him to be a really big version of themselves. What if God, our creator, stepped inside his creation, in a way we could understand and find relatable? And amazingly, he did!