Sources : Leviathan
Biblical Book of Job (Chapter 41, verse 1-34, New International Version): Can you pull in Leviathan with a fishhook or tie down its tongue with a rope? Can you put a cord through its nose or pierce its jaw with a hook? Will it keep begging you for mercy? Will it speak to you with gentle words? Will it make an agreement with you for you to take it as your slave for life? Can you make a pet of it like a bird or put it on a leash for the young women in your house? Will traders barter for it? Will they divide it up among the merchants? Can you fill its hide with harpoons or its head with fishing spears? If you lay a hand on it, you will remember the struggle and never do it again! Any hope of subduing it is false; the mere sight of it is overpowering. No one is fierce enough to rouse it. Who then is able to stand against me? Who has a claim against me that I must pay? Everything under heaven belongs to me. I will not fail to speak of Leviathan’s limbs, its strength and its graceful form. Who can strip off its outer coat? Who can penetrate its double coat of armor? Who dares open the doors of its mouth, ringed about with fearsome teeth? Its back has rows of shields tightly sealed together; each is so close to the next that no air can pass between. They are joined fast to one another; they cling together and cannot be parted. Its snorting throws out flashes of light; its eyes are like the rays of dawn. Flames stream from its mouth; sparks of fire shoot out. Smoke pours from its nostrils as from a boiling pot over burning reeds. Its breath sets coals ablaze, and flames dart from its mouth. Strength resides in its neck; dismay goes before it. The folds of its flesh are tightly joined; they are firm and immovable. Its chest is hard as rock, hard as a lower millstone. When it rises up, the mighty are terrified; they retreat before its thrashing. The sword that reaches it has no effect, nor does the spear or the dart or the javelin. Iron it treats like straw and bronze like rotten wood. Arrows do not make it flee; sling-stones are like chaff to it. A club seems to it but a piece of straw; it laughs at the rattling of the lance. Its undersides are jagged potsherds, leaving a trail in the mud like a threshing sledge. It makes the depths churn like a boiling cauldron and stirs up the sea like a pot of ointment. It leaves a glistening wake behind it; one would think the deep had white hair. Nothing on earth is its equal—a creature without fear. It looks down on all that are haughty; it is king over all that are proud.
Book of Enoch [ca. 300-200 BCE ] (Chapter 60:7): And on that day were two monsters parted, a female monster named Leviathan, to dwell in the abysses of the ocean over the fountains of the waters. But the male is named Behemoth, who occupied with his breast a waste wilderness on the east of the garden where the elect and righteous dwell, where my grandfather was taken up, the seventh from Adam, the first man whom the Lord of Spirits created. And I besought the other angel that he should show me the might of those monsters, how they were parted on one day and cast, the one into the abysses of the sea, and the other unto the dry land of the wilderness.
Esdras [ca. 100 CE] (Book 2, 6:47-52): On the fifth day you commanded the seventh part, where the water had been gathered together, to bring forth living creatures, birds, and fishes, and so it was done. The dumb and lifeless water produced living creatures, as it was commanded, so that therefore the nations might declare your wondrous works. Then you kept in existence two living creatures that you created; the one you called Behemoth and the name of the other Leviathan. And you separated one from the other, for the seventh part where the water had been gathered together could not hold them both. And you gave Behemoth one of the parts that had been dried up on the third day, to live in it, where there are a thousand mountains, but to Leviathan you gave the seventh part, the watery part, and you have kept them to be eaten by whom you wish and when you wish.