Xenomorph - Obscure Spectre
'(...) held seances right in this room, the visiting mediums all agree. There was something extraordinary about this desert valley. Few of the mediums ever returned, except one - a satanist. He was a (regular). It was his belief that the house itself had assumed demonic character.'
'There is definitely something in these ...'
'Our Father who art in heaven, hallowed be thy name, thy kingdom come, thy will be done on earth as it is in heaven, give us this day our daily bread, give us our trespasses'
'... (door knock sample) '
Second one from 'Alien 3', third from 'The Exorcist', last from the begining of 'Naked Lunch'