"Fear and Trembling" is a philosophical work by Søren Kierkegaard, published in 1843. It explores the concept of faith through the biblical story of Abraham and his willingness to sacrifice his son Isaac. Kierkegaard examines the tension between ethical duties and religious faith, emphasizing the individual's subjective experience. The book is structured around four main sections, each addressing different aspects of faith and the "knight of faith." Kierkegaard uses the term "teleological suspension of the ethical" to describe how true faith can transcend moral norms. This work is foundational in existential philosophy and has influenced various fields, including theology and literature.