Scientific knowledge versus spiritual knowledge

[Angrboda]

Is there justified true belief of spiritual things?  How does one verify that their beliefs about spirituality are justified and true?

What of the spiritual is considered knowledge?

How do you distinguish between what you call a "spiritual" belief from the set of all possible beliefs?

That's somewhat akin to asking what the difference between the natural and supernatural is. In this case, it depends on the meanings of science and spiritual.

sci·ence

noun: science

The intellectual and practical activity encompassing the systematic study of the structure and behavior of the physical and natural world through observation and experiment.
"the world of science and technology"
synonyms: branch of knowledge, body of knowledge/information, area of study, discipline, field
"the science of criminology"

I'm not one claiming that there is a body of knowledge which relates to the spiritual, so what that consists of would be the job of the person claiming such a body of justified true beliefs exists. That would be you or Mystic. Mystic appears to want to claim psychological truths as spiritual. I would think that improper. The nature and basis of human mental existence is poorly charted, but that doesn't make it 'spiritual'.

What about you? What do you consider spiritual?