mystichobo wrote:Is that the Yggdrasil is the background?
No, that is the Burning Bush. With lines coming off it that presumably signify divine radiance.
Anyway, I'm going to go with the interpretation that the joke is comparing Moses seeing the Bush with the Ewoks seeing C-3PO. Not too bad, actually.
EDIT: It does rely on the assumption that we have memorised both the Bible and the entire Star Wars franchise. It's also possibly that Randall made a random comic strip with no intended purpose just to see what people would come up with.