"Now there was a day when the sons of God came to present themselves before the Lord, and Satan came also among them. And the Lord said unto Satan, Whence camest thou? Then Satan answered the Lord, and said, From going to and fro in the earth, and from walking up and down in it."
Unlike the other worlds which God created, Satan was able to deceive this one. He took it upon himself to declare himself "ruler of this world."
In turn, Earth is the center of evil in our universe. Then what must be the greatest of all evil?
"So now, no longer am I the one doing it, but the sin which dwells in me. For I know that nothing good dwells in me, that is, in my flesh; for the willing is present in me, but the doing of the good is not." Romans 7:17,18
Verses 19-21 continues to reinforce that the greatest evil we will struggle over is self.
Matthew 26:41, "Watch and pray, that ye not enter not into temptation: the spirit indeed is willing, but the flesh is weak."
From movies and books, we may accept the perception that there is greater evil out of this world that could destroy us, but this is not what God says. Our father implores us to turn our eyes towards him so that no weapon formed against you shall prosper--even if that weapon is our own sinful nature.
How is Christ trying to redirect you toward Him from sin?