"The Dragon and the Sea Beast"
And the dragon stood on the shore of the sea.
The Beast out of the Sea
And I saw a beast coming out of the sea. He had ten horns and seven heads, with ten crowns on his horns, and on each head a blasphemous name. The beast I saw resembled a leopard, but had feet like those of a bear and a mouth like that of a lion. The dragon gave the beast his power and his throne and great authority. One of the heads of the beast seemed to have had a fatal wound, but the fatal wound had been healed. The whole world was astonished and followed the beast. Men worshiped the dragon because he had given authority to the beast, and they also worshiped the beast and asked, "Who is like the beast? Who can make war against him?"
The beast was given a mouth to utter proud words and blasphemies and to exercise his authority for forty-two months. He opened his mouth to blaspheme God, and to slander his name and his dwelling place and those who live in heaven. He was given power to make war against the saints and to conquer them. And he was given authority over every tribe, people, language and nation. All inhabitants of the earth will worship the beast—all whose names have not been written in the book of life belonging to the Lamb that was slain from the creation of the world.
What is the Devils Autority?
Again, the devil took him to a very high mountain and showed him all the kingdoms of the world and their splendor. "All this I will give you," he said, "if you will bow down and worship me."
Jesus said to him, "Away from me, Satan! For it is written: 'Worship the Lord your God, and serve him only.'
The LORD said to Satan, "Very well, then, everything he has is in your hands, but on the man himself do not lay a finger."
Then Satan went out from the presence of the LORD.
You belong to your father, the devil, and you want to carry out your father's desire. He was a murderer from the beginning, not holding to the truth, for there is no truth in him. When he lies, he speaks his native language, for he is a liar and the father of lies.
Satan does not have the ability to hurt anybody without Gods permission. Remember just because he told something to Jesus it doesn't mean it's true.
Isaiah 27:1 In that day,
the LORD will punish with his sword, his fierce, great and powerful sword, Leviathan the gliding serpent, Leviathan the coiling serpent; he will slay the monster of the sea.