Swift's first major prose work, A Tale of a Tub, demonstrates many of the themes and stylistic techniques he would employ in his later work. It is at once wildly playful and funny while being pointed and harshly critical of its targets. In its main thread, the Tale recounts the exploits of three sons, representing the main threads of Christianity, who receive a bequest from their father of a coat each, with the added instructions to make no alterations whatsoever. However, the sons soon find that their coats have fallen out of current fashion, and begin to look for loopholes in their father's will that will let them make the needed alterations. As each finds his own means of getting around their father's admonition, they struggle with each other for power and dominance. Inserted into this story, in alternating chapters, the narrator includes a series of whimsical "digressions" on various subjects.