@fmf said
If you've never come across the whole "indwelling Holy Spirit" magic thing, then I don't see how you can be a commentator on Christianity.
I'm not certain what you mean by that. What I take Biblical references to "the Spirit of the Lord was upon them" to mean is something along the lines of internal religious ecstacy rather than evidence of anything magical in the sense of breaking physical laws in the way scientific instrumentation can detect. I don't see this as being in the same category as magical thinking. Magical thinking would be to expect thought to have physical effects in the world without the thinker taking any other action.
From a rationalistic point of view praying for good health might be expected to work by some sort of placebo mechanism, praying for fortitude through a crisis is also liable to be helpful at a psychological level. There is a neurological explanation for, or at least description of, religious ecstacy. Since I can't think of any entirely satisfactory argument against the existence of a creator god I do not regard the core beliefs of any particular religion, and Christianity in particular, as being indicative of magical thinking.
From a theistic point of view, again I'll restrict this to Christianity, the phenomena I've talked about might involve divine intervention, or at least some level of communication even if only one way. A state of religious ecstacy induced by God might be detectable by fMRI, but this is not distinguishable to the operator of the fMRI machine from such a state induced by the subject themselves. What I'm trying to express is that I don't think that there is a strong contradiction between Christianity and rationalism, and I don't think that magical thinking is a necessary part of Christianity. What I'm wondering about is what defences the religion has against it, because magical thinking is a road to nowhere as far as making one's way in the world. Essentially it's harmful as it produces a barrier against making real progress.