Jude 5 Though you already know all this, I want to remind you that the Lord at one time delivered his people out of Egypt, but later destroyed those who did not believe. 6 And the angels who did not keep their positions of authority but abandoned their proper dwelling—these he has kept in darkness, bound with everlasting chains for judgment on the great Day. 7 In a similar way, Sodom and Gomorrah and the surrounding towns gave themselves up to sexual immorality and perversion. They serve as an example of those who suffer the punishment of eternal fire. 8 In the very same way, on the strength of their dreams these ungodly people pollute their own bodies, reject authority and heap abuse on celestial beings. 9 But even the archangel Michael, when he was disputing with the devil about the body of Moses, did not himself dare to condemn him for slander but said, “The Lord rebuke you!” 10 Yet these people speak abusively against whatever they do not understand; and what things they do understand by instinct, like unreasoning animals—these are the very things that destroy them.
The New King James version says in verse 8, “8 likewise also these dreamers defile the flesh, reject authority, and speak evil of dignitaries.” [May those curse it who curse the day, Those who are ready to arouse Leviathan.’]
Revelation 20 “Then I saw an angel coming down from heaven, having the key to the bottomless pit and a great chain in his hand. 2 He laid hold of the dragon, that serpent of old, who is the Devil and Satan, and bound him for a thousand years; 3 and he cast him into the bottomless pit, and shut him up, and set a seal on him, so that he should deceive the nations no more till the thousand years were finished. But after these things he must be released for a little while.” [“Can you draw out Leviathan with a hook, or snare his tongue with a line which you lower?]
Job 1 “Now there was a day when the sons of God came to present themselves before the LORD, and Satan also came among them. 7 And the LORD said to Satan, “From where do you come?” So Satan answered the LORD and said, “From going to and fro on the earth, and from walking back and forth on it.” [There the ships sail about; there is that Leviathan Which You have made to play there]
Revelation 12 “So the great dragon was cast out, that serpent of old, called the Devil and Satan, who deceives the whole world; he was cast to the earth, and his angels were cast out with him. [In that day the LORD with His severe sword, great and strong, Will punish Leviathan the fleeing serpent, Leviathan that twisted serpent; And He will slay the reptile that is in the sea]
By the way the word ‘sea’ in the bible is symbolic for ‘people’. So, this Leviathan will be cast out from messing with people.
So, with all of this who do you think Leviathan is? I believe it is referring to Satan who has been behind the scenes all along causing disruption and ultimate destruction for mankind since Adam and Eve. He is brought up here all of a sudden in verse 1 of Isaiah and then our Lord inspires His prophet to talk about other things. To show you what I mean turn with me to the chapter 14 of Isaiah.