“The reason the Son of God appeared was to destroy the devil’s work.”
1 John 3:8 (NIV)

"The dragon was enraged at the woman and went off to wage war against the rest of her offspring — those who keep God’s commands and hold fast their testimony about Jesus."
Revelation 12:17 (NIV)

"Satan, who is the god of this world, has blinded the minds of those who don’t believe."
2 Corinthians 4:4 (NIV)

"The time for judging this world has come, when Satan, the ruler of this world, will be cast out."
John 12:31 (NLT)

"Stay alert! Watch out for your great enemy, the devil. He prowls around like a roaring lion, looking for someone to devour.  Stand firm against him, and be strong in your faith. Remember that your family of believers all over the world is going through the same kind of suffering you are."
1 Peter 5:8-9 (NLT)

"See what great love the Father has lavished on us, that we should be called children of God! And that is what we are...  No one who is born of God will continue to sin, because God’s seed remains in them; they cannot go on sinning, because they have been born of God.  This is how we know who the children of God are and who the children of the devil are: Anyone who does not do what is right is not God’s child, nor is anyone who does not love their brother and sister."
1 John 3:1, 9-10 (NIV)

"One of the things that surprised me when I first read the New Testament seriously was that it talked so much about a Dark Power in the universe – a mighty evil spirit who was held to be the Power behind death and disease, and sin.”
C.S. Lewis - Mere Christianity