The definition of a parable is: a simple story used to illustrate a moral or spiritual lesson, as told by Jesus in the Gospels. The definition of pathos is: a quality that evokes pity or sadness
In the excerpt above, when Wiesel says "Only God and God alone can and must remember everything," he is using parable to illustrate how great God is, by giving an example of something he can do that not one person on earth can. Also, by saying "<span>Without the ability to forget, man would live in a permanent, paralyzing fear of death," Wiesel is using pathos to stimulate a feeling of sadness, as thinking of how paralyzing fear of death cannot be very pleasant.</span>
A parable is a succinct, didactic story, in prose or verse that illustrates one or more instructive lessons or principles. It differs from a fable in that fables employ animals, plants, inanimate objects, or forces of nature as characters, whereas parables have human characters. The simplest way to put it is a parable is a type of analogy.
Pathos is a communication technique used most often in rhetoric (where it is considered one of the three modes of persuasion, alongside ethos and logos), and in literature, film and other narrative art