What does this dream mean... if anything?

I had a dream last night, it was honestly the most vivid and realistic dream i have ever had. it started out that i was wandering around an unknown neighborhood with my family, i think we were looking at properties for no reason at all it seemed. We came across a beautiful big church as we entered i quickly realized that this was no ordinary church i remember that for some reason it was for sale as a home and the current owners were a muslim or islamic family. in the centre of this church there was a few statues of kings and people from religious allegory etc, these statues reached high into the ceilings of the church and above the statues was a winding staircase, I didn't really see where it went but it went high. The roof was the most amazing glass paneling that let the entire sky be visible, it was day time and it was honestly the most beautiful sky i had ever seen, i remember being on the verge of tears when looking up at the sky filled with pastel blues, purples, oranges and yellows. I had started to explore the house with my father and grandfather who hadn't been there before we entered the church. Whilst going through the home/church i noticed how much character it had being an old church from the 16th century or whatever. The church was absolutely massive with corridors and corridors of rooms and passageways that lead to all different areas, but i found a corner with two white doors that had been locked with giant looking clamps and big locks with big keyholes, very odd because it clashed with everything else i had seen previously in the church. I tried to open the doors and they simply wouldn't, i thought nothing of it and continued to explore the church but couldn't take my mind off the two large, locked doors i had encountered earlier. apon my family's conclusion of exploring this amazing church we all got a bit of a fright for some reason and quickly scurried out, whilst outside i approached a lovely looking muslim or islamic lady who i assumed was the owner of the house, i had asked what the locked doors were there for and what happened in those rooms. she responded by asking me if i was serious about buying the house or else she wouldn't tell me, i decided to say that yes i was serious about buying the house, mostly just because i wanted to know what happened in the rooms. as she started to explain what had happened i placed my hand on her back and felt her knotted hair starting to get uncomfortably tangled in my hands and wrap around my fingers, i was too preoccupied with getting her hair out of my hands that i didn't really pay any attention to what she was saying until she started staring at me saying "as for the rooms, i thought you knew, that's where the beast came and killed a dog." I was so terrifiedd i couldn't even think straightt i knew the beast she was talking about was satan all i could think of when i woke up is why the the hell i had this terrible dream. I'm not even a christian, ive been an atheist most of my life and it really made me uncomfortable thinking about this dream and what it could mean. any constructive advice or ideas would be appreciated.