Which came first: matter or spirit?

Yes, but there is some evidence of the existence of a spirit without a body, and not all of it is absurd and nonsense (although most of it is).

But this is already a matter of faith, i.e., irrational. If someone says that they have seen something unknown and unverifiable, then you can believe them, or you can not believe them; this does not add to personal knowledge, as it does not happen to the person themselves, but comes from the outside, as external information.
If I say, for example, that I spoke with God, you will probably not believe me, so for me it is an experience, and for you it is external information that you can believe or not believe.