There is an ecstatic religious experience, Birdie, which some Christians describe as "being born again", others as "being baptised by the Holy Spirit" which give exactly that emotional experience of personal connection with the Divine. I met many such when I ran away with the (hate speech alert) "gypsies" in my early teens.
The Pentecost example recorded in Acts:
" While Peter yet spake these words, the Holy Ghost fell on all them which heard the word.
And they of the circumcision which believed were astonished, as many as came with Peter, because that on the Gentiles also was poured out the gift of the Holy Ghost. For they heard them speak with tongues, and magnify God."
In my experience none of the fundamentalist Christians who had experienced this ("delusion" as you and I would see it) were the worse people for it. In fact I found all those I knew to be extremely kind and gracious.