A little while ago, I felt I should read the book "Visions Beyond The Veil" by H.A. Baker (Heidi Baker's father-in-law).
I ordered it and when it arrived, I read it within one day - - - not because I've got so much time to read - but because it was absolutely AMAZING (somehow you find the time to do the things you really want to do, right?!)!!!!
It describes the outpouring of the Holy Spirit on an orphanage in China in the 1930s or so.
The orphans that just before had been beggars, outcasts and homeless, were caught up into the invisible (yet VERY real) world and experienced exactly all the things the Bible talks about as REALITIES - visions of heaven, angels, satan, hell and the end of the age.
It is DEEPLY compelling - I can only HIGHLY recommend it!!! If nothing else, it will boost your love for God and passion to see people that don't know God come to know him!!!!