'Monster' in the Bible

“Am I the sea, or the sea monster,That You set a guard over me?

“God will not turn back His anger;The [proud] helpers of Rahab [the arrogant monster of the sea] bow under Him.

There the ships [of the sea] sail,And Leviathan [the sea monster], which You have formed to play there.

In that day the Lord will punish Leviathan the fleeing serpentWith His fierce and great and mighty sword [rescuing Israel from her enemy],Even Leviathan the twisted serpent;And He will kill the dragon who lives in the sea.

The creatures of the desert will encounter jackalsAnd the hairy goat will call to its kind;Indeed, Lilith (night demon) will settle thereAnd find herself a place of rest.

“Nebuchadnezzar king of Babylon has devoured me, he has crushed me,He has set me down like an empty vessel.Like a monster he has swallowed me up,He has filled his belly with my delicacies;He has spit me out and washed me away.

Speak and say, ‘Thus says the Lord God,“Behold, I am against you, Pharaoh king of Egypt,The great monster that lies in the midst of his rivers,[Boastfully] declaring, ‘My Nile is my own, and I have made it for myself.’

“Son of man, take up a dirge (funeral poem to be sung) over Pharaoh king of Egypt and say to him,‘You have compared yourself to a young lion among the nations,But you are like a monster in the seas;You burst into your riversAnd disturbed and muddied the waters with your feetAnd fouled their rivers [the source of their prosperity].’”

for just as Jonah was three days and three nights in the belly of the sea monster, so will the Son of Man be three days and three nights in the heart of the earth.

When they have finished their testimony and given their evidence, the beast that comes up out of the abyss (bottomless pit) will wage war with them, and overcome them and kill them.