"Leviathan" is an image of the open and hidden opposition to the Will of God of the nations of the sinful world system and its cruel political and false religious leaders, the rulers of the nations.
"Leviathan" ("straight running" and "bending") is the nature and character of the essence of evil, as well as a symbol of the monstrous in its atrocities, "snake" cunning, guile of the sinful system of the world, its spokesmen and inspirers.