If god is omniscient, he knows all the choices we will make at the time we are created. Where does free will come into play in this scenario? Also, why does god allow Satan do exist at all? It's amazing the the greatest theological minds throughout history can't reconcile evil in the divine plan, but you come along and easily do it. It's great to have access to such amazing minds on a stoner's website, we are truly blessed...
I'd bet that some children and teachers at Sandy Hook cried out for Jesus to save them. What went wrong there?
So you say, other religions say differently. Why does your religion have any more merit than others?
I cannot tell you the mind and heart of God. As far as why satan exists, i can only say that satan was not created evil, He chose to rebel against God and is the father of evil. God does not kill anything He creates, the souls He creates are eternal. God allows satan to tempt and to test us because of our sin and fall in the garden of eden, we brought this curse upon ourselves when we chose to defy God.
The name and power of Jesus Christ is the only power that can conquer evil and save us from the gates of hell. The only way to fight demons is in the power of the name of Jesus Christ. All religions claim to be the way, Christianity is the only religion backed by the power of God to prove itself. Read the word of God and feel it's power.