That assumes that it is a story about a magician, of course.
No, that's not an assumption, it's a description. Within the tale he raises the dead, expels demons, conjures food, transmutates liquids and walks on water - that's magic. That you call them 'miracles' to try to justify a grown up believing in magic is just special pleading.
Your fundamental understanding is that there is no such thing as a deity and therefore everything that points to the existence of one has to be deemed as magic, superstition, myth, etc.
No, my fundamental understanding is that reality behaves consistently, and that from that consistency we can deduce probable facts. One of those probable facts is that magic isn't real. I don't start from a position of 'no gods', I end there.
My fundamental understanding is that there is such a being as God, and what we hear in the Gospels fits with that understanding perfectly well.
But that 'fundamental understanding' is shaped by those gospels - which means it's not a fundamental understanding, it's a learnt (or trained) behaviour; outside of that self-referential circle there's no reason for presuming that any of it's real. If people believed in Voldemort they'd have exactly as much justification for that belief because of Harry Potter and the Prisoner of Azkaban as you do for the mythic Jesus.
That is why I've regularly argued that discussions like this can never be resolved as we aren't even talking about the same thing, let alone starting on the same level of understanding.
Only one of us is talking about a level of understanding, me. You're talking about faith, which isn't understanding, isn't knowledge and isn't conclusions. It's the maintenance of a position in the absence of, or disregard of, any justification.
O.