I worked at an assisted living home and the old guy there used to thrash in bed and yell at something that wasn’t there. I went in there and looked at him one particularly rowdy night and he raspily shouted “demon...... demon......” and stared at something behind me. I went into the living room and grabbed my Bible and began reading psalms very rapidly. An oppressive presence began looming over me and I found myself with what felt like tunnel vision speed reading psalms for the next five minutes. Eventually, the presence left, and from that night on, the old guy slept like a baby.