Jonah or Jonas, son of Amittai, is a prophet in the Hebrew Bible from Gath-hepher of the northern kingdom of Israel in about the 8th century BCE. Jonah is the central figure of the Book of Jonah, which details his reluctance in delivering God's judgement on the city of Nineveh. Subsequently he returns to the divine mission after he is swallowed by a large sea creature and then released. In Judaism, the story of Jonah represents the teaching of teshuva, which is the ability to repent and be forgiven by God. In the New Testament, Jesus calls himself "greater than Jonah" and promises the Pharisees "the sign of Jonah", which is his resurrection. Early Christian interpreters viewed Jonah as a type for Jesus. Jonah is regarded as a prophet in Islam, and the biblical narrative of Jonah is repeated in the Quran with a chapter named after him (Yunus). Mainstream Bible scholars generally regard the Book of Jonah as fictional, and often at least partially satirical. The character of Jonah, son of Amittai may have been based on the historical prophet of the same name who prophesied during the reign of Amaziah of Judah, as mentioned in 2 Kings. Although the creature that swallowed Jonah is often depicted in art and culture as a whale, the Hebrew text uses the phrase dag gadol, which means "big fish". In the seventeenth and early eighteenth centuries, the species of the fish that swallowed Jonah was the subject of speculation by naturalists, who interpreted the story as an account of a historical incident. Some modern scholars of folklore, on the other hand, note similarities between Jonah and other legendary religious and mythical figures, specifically Gilgamesh and the Greek hero Jason. Book of Jonah Jonah is the central character in the Book of Jonah, in which God commands him to go to the city of Nineveh to prophesy against it "for their great wickedness is come up before me," but Jonah instead attempts to flee from "the presence of the Lord" by going to Jaffa (sometimes transliterated as Joppa or Joppe). He sets sail for Tarshish.