Atheism

Clark's third Law, basically.

Any sufficiently advanced technology is indistinguishable from magic.

replace "advanced technology" with "poorly understood natural phenomena", and you have it.

Specifically of miracles- You assume they actually happened. Jesus almost certainly did not heal the sick, and Lazarus almost certainly did not return from the dead. Keep in mind the gospels were written 50+ years after jesus's death, probably as the first generation of people were dying off, or more likely, the second generation.

As for modern miracles, none seem to have actually happened, or that prayer/divine intervention is the explanation given despite other things contributing to the "miracle". (often cited example: praying for positive medical outcomes and going to the doctor. people will thank their god for the positive outcome, even though it was the doctor's skill, knowledge and wisdom that caused it.)

Or like praying for a job while putting in the hard work to get a good job.

As for the euphoric experiences of the holy spirit coming down. it's basically a sort of mass hypnosis. through communal worship and such, people are put into a suggestible state. (or at least a few are,) You can even put yourself into that state. Then, the person leading the affair makes all kinds of suggestions and you just kind of go with it. This is not to say that the experience of euphoria is any less meaningful; or that the leaders are some how malicious and exploitive. (well, I'd say they are, but that's a different matter.)

Other "miracles" either didn't happen or just misunderstood an interpreted as something else. (The star guiding the 3 wise men would have been seen by literally everyone in the region, for example. They came a long distance, possibly from persia. even if there was something there... following it to a house is ridiculous.)

For a less loaded example, I work as a manager in contract security. i had an employee of the sort that believed ghosts were real. This belief led him to ascribe supernatural things to something that wasn't supernatural at all. Specifically, on his late-night rounds, there was a door that would keep closing on him. (it was a fire door being held open by the electromagnetic door holders. The EM holders shut off when the fire alarm is triggered.)

Turns out that it was a faulty door holder. But he was so very convinced that a ghost was closing it on him, so he didn't put it in his reports or notify maintenance peeps. Didn't even really bother to look into it. he'd just put the door back and go on his way.

The thing was, the magnet was old and it was loosing it's strength- it was just strong enough to hold the door with nothing going on, and it kept closing on him specifically because as he walked through, his wake would push on it and cause it to break free. It was an easy fix- the door holder was replaced and they wanted me to talk to the guy because apparently it was like that for months or more, but he knew it was happening.

The thing with religion is that it's designed to bypass your rational mind and gives you the easy answer. It's designed to make you stupid so that you don't get the real answer. It's designed that way because when you get the real answer, you usually stop paying your dues.