Leviathan (pronounced /lɨˈvaɪ.əθən/; Hebrew: לִוְיָתָן, Modern Livyatan Tiberian Liwyāṯān ; "twisted, coiled"), is a sea monster referred to in the Hebrew Bible (the Christian Old Testament). The word leviathan has become synonymous with any large sea monster or creature. In modern literature (such as the novel Moby-Dick) it refers to great whales, and in Modern Hebrew, it means simply "whale."
This may give some glues to what we might expect from TOMI pt3 .
The word "Leviathan" appears in five places in the Hebrew and Christian Bibles, with the Book of Job, chapters 40 and 41, being dedicated to describing Leviathan in detail:
Book of Job 3:8 "May those who curse days curse that day, those who are ready to rouse Leviathan"; NIV
Book of Job 41:1-34 "Can you pull in the leviathan with a fishhook or tie down his tongue with a rope? Can you put a cord through his nose or pierce his jaw with a hook? ...Can you fill his hide with harpoons or his head with fishing spears?" NIV
Psalms 74:14: "It was you who crushed the heads of Leviathan and gave him as food to the creatures of the desert." NLT
Psalms 104:24-26: "O Lord, what a variety of things you have made! In wisdom you have made them all. The earth is full of your creatures. Here is the ocean, vast and wide, teeming with life of every kind, both large and small. See the ships sailing along, and Leviathan, which you made to play in the sea. NLT
Isaiah 27:1: "In that day the LORD with His severe sword, great and strong, Will punish Leviathan the fleeing serpent, Leviathan that twisted serpent; And He will slay the reptile that is in the sea." NKJV
Leviathan as an animal
In the book of Job, both Behemoth and Leviathan are listed alongside a number of other animals that are clearly mundane, such as goats, eagles, and hawks, leading some Christian scholars to surmise that Behemoth and Leviathan may also be mundane creatures. Some propose Leviathan was a Nile crocodile. Like the Leviathan, the Nile crocodile is aquatic, scaly, and possesses fierce teeth.
Job 41:18 states that Leviathan's eyes "are like the eyelids of the morning". Others suggest that the Leviathan is an exaggerated account of a whale. Megalodon has also been suggested as a possibility. However, Job also goes on to describe Leviathan as "breathing fire".
Some Young Earth Creationists have alleged that Leviathan was either a dinosaur, such as Parasaurolophus (despite being a herbivore and a non-aquatic animal), or a giant marine reptile, such as Kronosaurus (despite lacking armor and a serpentine body). Other Young Earth Creationists say that the giant crocodilian, Sarcosuchus, best fits the description in the Bible.
Leviathan also appears in the Book of Enoch, giving the following description of this monster's origins there mentioned as being female, as opposed to the male Behemoth:
And that day will two monsters be parted, one monster, a female named Leviathan in order to dwell in the abyss of the ocean over the fountains of water; and (the other), a male called Behemoth, which holds his chest in an invisible desert whose name is Dundayin, east of the garden of Eden. - 1 Enoch 60:7-8