by Søren Kierkegaard 
Published: 1843
Episode: LA X
Found in a backpack in the cave outside the Temple. ("LA X, Parts 1 & 2")
Fear and Trembling (original Danish title: Frygt og Bæven) is an influential philosophical work by Søren Kierkegaard, published in 1843 under the pseudonym Johannes de silentio (John the Silent). The title is a reference to a line from Philippians 2:12, "...continue to work out your salvation with fear and trembling."
Fear and Trembling presents a highly original and provocative interpretation of the Binding of Isaac story as told in Genesis Chapter 22, and uses the story as an occasion to discuss fundamental issues in moral philosophy and the philosophy of religion, such as the nature of God and faith, faith's relationship with ethics and morality, and the difficulty of being authentically religious
Wiki Link
Amazon Link