This is a question that I began asking myself in 1989 or 1990 when I began to read near death experience accounts.
Technically... back in 1989 I would be termed a "Protestant" due to my not being Roman Catholic. Back then I was a member of The Worldwide Church of God and I feel that we were significantly guilty of blasphemy against the Holy Spirit in our doctrines regarding who had received and was led by the Holy Spirit?
I believe that my mentor who got me out of Atheism would at t