This verse portrays God speaking of Leviathan, which clearly represents a being of awesome power and influence over mankind. God's description of Leviathan must not be misunderstood by focusing merely on its monstrous physical appearance, but rather on its reality as a living being, possessing strong leadership qualities and powerful influence.
Leviathan strikes fear into men to bring about submission to him and thus control of them. He is the king of pride, and he rules "the children of pride," who are the overwhelming masses of unconverted people, those not submissive to God. They, like their king and spiritual father, are enemies of God. Whether his mass of followers is aware of it or not, they have been forcibly inducted into his service. This is the same being of which Jesus informed the Jews in John 8:44:
You are of your father the devil, and the desires of your father you want to do. He was a murderer from the beginning, and does not stand in the truth, because there is no truth in him. When he speaks a lie, he speaks from his own resources, for he is a liar and the father of it.
The one who became Satan is a powerful and dominating creation of Almighty God. He was created, not as an enemy of God and His purpose, but as a powerful cherub to serve Him in His purpose by leading other angels in their service to God. Jude 6 discloses that the place of their service was on Planet Earth before mankind was created. But, as Ezekiel 28:14-17 shows, he turned his heart against God to become an enemy, influencing the angels under his charge to rebel with him to fight against God (Revelation 12:9; Isaiah 14:12-14).
God defeated them, and they were cast back to earth. Satan and his minions are still here, continuing their war against God and His creation—man. Ephesians 2:1-3 informs us about how this warfare is being carried out:
And you He made alive, who were dead in trespasses and sins, in which you once walked according to the course of this world, according to the prince of the power of the air, the spirit who now works in the sons of disobedience, among whom also we all once conducted ourselves in the lusts of our flesh, fulfilling the desires of the flesh and of the mind, and were by nature children of wrath, just as the others.
Satan's influence is worldwide: "We know that we are of God, and the whole world lies under the sway of the wicked one" (I John 5:19). His ultimate object is to destroy God, but along the way he also strives to destroy any aspect of God's creation, most especially man. He is doing this through inducing human beings to sin in order to bring upon them the wages of sin—death.
His basic tool for accomplishing this is by means of his spirit. The driving forces of his prideful, deceitful mind and those of his demon companions are deceit, hatred, anger, competition, and destruction, all encompassed within an overweening pride. People absorb them into their thinking processes, becoming like him in attitude and conduct. These characteristics lodge into human hearts and generate resistance to God, His law, and His purpose.