Leviathan

Leviathan (Hebrew: לִוְיָתָן, "Twisted; coiled") was a Biblical sea monster referred to in the Old Testament (Psalm 74:13-14; Job 41; Isaiah 27:1). The word leviathan has become synonymous with any large sea monster or creature. In the novel Moby-Dick it refers to great whales, and in Modern Hebrew, it means simply "whale".

Judaism
The word "Leviathan" appears five places in the Bible, and the Book of Job 41 is dedicated in 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: "Canst thou draw out leviathan with an hook? or his tongue with a cord which thou lettest down?...He beholdeth all high things: he is a king over all the children of pride." KJV (quoted 1 and 34 only)

Psalms 74:14: "Thou brakest the heads of leviathan in pieces, and gavest him to be meat to the people inhabiting the wilderness." KJV

Psalms 104:24,25: "O LORD, how manifold are thy works! in wisdom hast thou made them all: the earth is full of thy riches. So is this great and wide sea, wherein are things creeping innumerable, both small and great beasts." KJV;

Isaiah 27:1: "In that day the Lord with his sore and great and strong sword shall punish leviathan the piercing serpent, even leviathan that crooked serpent; and he shall slay the dragon that is in the sea." KJV

The king over the children of pride is a reference to Satan (the Accuser). Just as he is referred to in the New Testament as a red dragon in Rev.12 having seven heads, so in Psalm 74:14: "Thou didst crush the heads of the Leviathan,..."

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