Genna said:
If there is the devil, why did God create him? I am not sure which religions believe in a personal devil but know that Islam and Christianity do. Also the bible says that God creates evil, why would he allow for such wickedness to present in this world if he loves mankind? Why not destroy this devil? Is he not powerful enough to rid the world of this devil on his own?
I form the light, and create darkness: I make peace, and create evil: I the LORD do all these things. (Isaiah 45:7, KJV)
You have to remember that the Jewish view of God is not the same as the Christian view of God. And Isaiah was a Jewish prophet. In the Jewish view, God gives both happiness and suffering. Ha-Satan is a servant of God. He does nothing without God's permission. Why does God do this? I don't know. But I know that the Jewish view of God is less about love and more about justice/relationship.
In Christianity, God is viewed as love. In order to make sense out of God=love and the fact that there's suffering, some Christians attribute a lot of power to the Devil. Basically, Satan got a promotion. Instead of being God's servant he is now God's antagonist. Why does God allow the Devil to continue? People have tried to tell me it's a test of our faith. I don't find that very compelling.
In Islam, Satan is a jinn, a creature who is neither angel nor human. And the jinn are not very fond of humans. In the Christian tradition, Satan was tossed from heaven because he rebelled and tried to usurp God's throne. In the Islamic tradition, Satan's "rebellion" was that he refused to bow to Adam on the basis that Adam was a created being and no better than him. I am not familiar enough with Islam to be able to guess why God allows Satan to exist. (But again, Islam is more about justice and less about love.) As far as I can tell, the jinn just exist. I mean, why does God create mosquitos and flesh-eating bacteria?