'Monster' in the Bible

In that day Jehovah, with his sore and great and strong sword, will visit leviathan the fleeing serpent, and leviathan the crooked serpent; and he will slay the monster that is in the sea.

Awake, awake, put on strength, O arm of Jehovah; awake, as in the days of old, as in the generations of passed ages. Is it not thou that hath hewn Rahab in pieces, and pierced the monster?

speak, and say, Thus saith the Lord Jehovah: Behold, I am against thee, Pharaoh king of Egypt, the great monster that lieth in the midst of his rivers, which saith, My river is mine own, and I made it for myself.

Son of man, take up a lamentation for Pharaoh king of Egypt, and say unto him, Thou wast like a young lion among the nations, and thou wast as a monster in the seas; and thou didst break forth in thy rivers, and troubledst the waters with thy feet, and fouledst their rivers.