A childhood belief about church

Sometimes my family and I used to go to my dad's childhood church for special occasions, instead of our usual one. There was a door behind the altar with a fancy iron gate, and when I asked my dad what was in there, he said that was where Jesus was. But unlike a lot of beliefs I've seen on here, I did not feel like that church was special to have Jesus living in it; I was actually kind of creeped out. Why did they have to keep him behind a gate instead of letting him out to see everyone? I ended up deciding that maybe it was not Jesus in there at all, but an angry spirit that had to be kept away from us. Or if it was Jesus, maybe HE was angry about something somebody at the church had done and was locked up so he wouldn't take revenge in public.

Recently I went back to that church and it has been remodeled to look entirely different. The door is gone and just a blank wall is there now. I might think I had imagined that door if not for the vivid memories of all the time I spent as a kid staring at it in wonder and horror during mass.