Satan became the ruler of this world and the prince of the power of the air (John 12:31;2 Corinthians 4:4;Ephesians 2:2). He is an accuser (Revelation 12:10), a tempter (Matthew 4:3;1 Thessalonians 3:5), and a deceiver (Genesis 3;2 Corinthians 4:4;Revelation 20:3). His very name means “adversary” or “one who opposes.” Another of his titles, the devil, means “slanderer.”
Even though he was cast out of heaven, he still seeks to elevate his throne above God. He tries to counterfeit (and his succeeded in some things) everything that God does, hoping to gain the worship of the world and encourage opposition to God's kingdom. Satan is the ultimate source behind every false cult and world religion. Satan will do anything and everything in his power to oppose God and those who follow God. However, Satan’s destiny is sealed—an eternity in the lake of fire (Revelation 20:10).
for so I ordained you.
You were on the holy mount of God;
you walked among the fiery stones.
You were blameless in your ways
from the day you were created
till wickedness was found in you.
Through your widespread trade
you were filled with violence,
and you sinned.
So I drove you in disgrace from the mount of God,
and I expelled you, O guardian cherub,
from among the fiery stones.
Your heart became proud
on account of your beauty,
and you corrupted your wisdom
because of your splendor.
So I threw you to the earth;
I made a spectacle of you before kings.
By your many sins and dishonest trade
you have desecrated your sanctuaries.
So I made a fire come out from you,
and it consumed you,
and I reduced you to ashes on the ground
in the sight of all who were watching.
And another sign appeared in heaven: behold, a great, red dragon, with seven heads and ten horns, and on his heads seven diadems. His tail swept down a third of the stars of heaven and cast them to the earth. And the dragon stood before the woman who was about to give birth, so that when she bore her child he might devour it. She gave birth to a male child, one who is to rule all the nations with a rod of iron, but her child was caught up to God and to his throne, and the woman fled into the wilderness, where she has a place prepared by God, in which she is to be nourished for 1,260 days.