Ruin Explorer
Legend
(IRL there can be a "historical Jesus" but that doesn't automatically mean he's the son of god).
Quite and even historically this precise sort of thing was a point of contention, with many early takes in Christianity having different spins on the exact nature of Christ, the triune god, and so on. Let's not even start on Gnosticism or other takes.
I mention this because D&D has tended to have very little of this sort of complex and interesting religious conflict (which is also extremely period-appropriate), due to the whole "gods are real and talk to people and have specific alignments" and so on deal.
Eberron was potentially the richest setting for this because of the strong implication that the gods might not be real at all, or not what people thought and apparent good and bad gods might not be that simple. So making it part of the actual Great Wheel cosmology, where gods generally are very real (which it clearly wasn't in 3E and 4E) is rather sad. But as you say at least it tries to keep things vague. I have literally no idea why they felt the need to explicitly place it in the Great Wheel though and would love to hear an explanation. I also guarantee 6th edition reverses that position.