Your friend saw this resource on bethinking.org and thought you should see it:
What is Spiritual?
Most people are comfortable with the idea that "spiritual = supernatural". The supernatural is invisible. Does this mean that when we become more spiritual we become less visible? What does…
See the full resource online by visiting bethinking.org:
https://www.bethinking.org/human-life/what-is-spiritual
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bethinking.org is a collection of resources which aims to make sense of the big questions of life about God, Jesus and Christianity.