[249] [cap.51] "And about the setting of the sun a trance fell upon Abraham, and, behold, fear with great darkness fell upon him." [153] Now there is one kind of trance which is a sort of frantic delirium, causing infirmity of mind, either through old age, or melancholy, or some other similar cause. There is another kind which is excessive consternation, arising usually from [154] things which happen suddenly and unexpectedly. Another kind is mere tranquillity of the mind, arising when it is inclined by nature to be quiet: but that which is the best description of all is a divinely inspired and more vehement sort of enthusiasm, which the race of prophets is subject to.