He was seeing things in the spirit world that amazed him.
In college dorm many years ago, I experienced an out of body experience. I was feeling sad and depressed, and I was laying on my bed and asking God how much longer. I was surrounded by of course wicked young people doing wicked things, all the things young total hedonists will do. Constant drinking, party, sex, some drugs, some conflict, pressure to be just like them, all the time my freshman year by all the people around me and right in the open for months. I was feeling like there was no escape, so I avoided dorm life as much as I could.
I am laying there, suddenly I floated up out of my body and bumped the ceiling. I am floating! Turned around, looked down and saw myself lying in bed.
I felt like God was giving me a choice to depart right then and there. Scared, and wondering what was going on, I somehow fled back down into my body, and cried out to God to help me. And within a few days I began to meet a whole bunch of Christians on campus. And then my life became so much better.
Not the only spiritual experience I have had. All the things I experienced and was shown in the years since, convinced me of the undoubtable veracity and reality of the spiritual world surrounding all of us and the truth that is in Christ, Him being the Way, the Truth and the Life.