Evil never presents itself to its intended victim as anything other than warm and comforting. For some reason spirits that are of God seem cold and terrifying to people whose minds are already in disarray.
I don't agree. I was psychically open to the spirit world for some years and I could feel beings around me.
Sometimes the feelings were cold and unpleasant, but if I prayed and meditated I could feel the atmosphere lift and change to a warmth. I could tell when good spirits gathered around to protect me.
I had spiritual healing, which I felt as warmth, and a medium told me how to close my aura and protect myself.
My nervous system was like a psychic barometer for some years, before the healing corrected the problems one of which was my etheric body was loose and my chakras were misaligned.
I know from experience that evil feels cold and good feels warm to the nervous system.