Leviathan ( Livyatan) is a creature with the form of a sea serpent from Jewish mythology. It is referenced in several books of the Hebrew Bible, including Psalms, the Book of Job, the Book of Isaiah, and the Book of Amos; it is also mentioned in the apocryphal Book of Enoch.
The Destruction of Leviathan by Gustave Doré (1865)
The Leviathan of the Book of Job is a reflection of the older Canaanite Lotan, a primeval monster defeated by the god Baal Hadad. Parallels to the role of Mesopotamian Tiamat defeated by Marduk have long been drawn in comparative mythology, as have been wider comparisons to dragon and world serpent narratives such as Indra slaying Vrtra or Thor slaying Jörmungandr. Leviathan also figures in the Hebrew Bible as a metaphor for a powerful enemy, notably Babylon . Some 19th-century scholars have pragmatically interpreted it as referring to large aquatic creatures, such as the crocodile. The word later came to be used as a term for “great whale“, as well as for sea monsters in general