This is called progressive revelation[0].
> what would be the "naive view"
That the Bible is no different than, say, the Aeneid, or the Odyssey, or any other epic saga whose purpose is to provide a myth (in the literary sense) as an explanation for why things are, though are not tied to history explicitly.
> Assuming that the Bible is stating that such a being exists?
The Bible makes clear and explicit claims about its author, where creation came from, how and why humanity exists, as well as its ultimate end.
People often criticize those who hold to a Biblical faith as people trust in some "invisible, almighty, sentient being" yet themselves don't actually have any real answers to any of the most basic questions of creation and human existence.
[0]: https://www.blueletterbible.org/faq/don_stewart/don_stewart_...