There is an instant in which terror seems to grip your mind so wholly that escape appears quite hopeless.

There is an instant in which terror seems to grip your mind so wholly that escape appears quite hopeless. When you realise, once and for all, that it is you you fear, the mind perceives itself as split. And this had been concealed while you believed attack could be directed outward, and returned from outside to within. It seemed to be an enemy from outside you had to fear. And thus a god outside yourself became your mortal enemy; the source of fear. Now, for an instant, is a murderer perceived within you, eager for your death, intent on plotting punishment for you until the time when it can kill at last. (ACIM Workbook, #19}