Where did sin begin? With the devil. It's in the Bible, I John 3:8, NIV. "He who does what is sinful is of the devil, because the devil has been sinning from the beginning. The reason the Son of God appeared was to destroy the devil's work."
How long has the devil been a murderer and a liar? It's in the Bible, John 8:44, NIV. "You belong to your father, the devil, and you want to carry out your father's desire. He was a murderer from the beginning, not holding to the truth, for there is no truth in him. When he lies, he speaks his native language, for he is a liar and the father of lies."
Where did Satan come from? It's in the Bible, Revelation 12:7-9, TLB. "Then there was war in heaven; Michael and the angels under His command fought the Dragon and his hosts of fallen angels. And the Dragon lost the battle and was forced from heaven. This great Dragon—the ancient serpent called the devil, or Satan, the one deceiving the whole world—was thrown down onto the earth with all his army."
Was Satan created sinful? No, he was created perfect, with freedom to choose. It's in the Bible, Ezekiel 28:15, TLB. "You were perfect in all you did from the day you were created until that time when wrong was found in you."
What led to Satan's downfall? It's in the Bible, Ezekiel 28:17, TLB. "Your heart was filled with pride because of all your beauty; you corrupted your wisdom for the sake of your splendor."
Satan, known as Lucifer before he sinned, wanted to be equal with God. It's in the Bible, Isaiah 14:12-14, TLB. "How you are fallen from heaven, O Lucifer, son of the morning! …For you said to yourself, 'I will ascend to heaven and rule the angels. I will take the highest throne… I will climb to the highest heavens and be like the Most High."
In contrast to the pride and self-exaltation of Satan, what spirit did Jesus have? It's in the Bible, Philippians 2:6-8, TLB. "Who, though He was God, did not demand and cling to His rights as God, but laid aside His mighty power and glory, taking the disguise of a slave and becoming like men. And He humbled Himself even further, going so far as actually to die a criminal's death on a cross."
Satan's supernatural forces are waging a war. It's in the Bible, Ephesians 6:11, TLB. "Put on all of God's armor so that you will be able to stand safe against all strategies and tricks of Satan."
Satan dared to tempt Christ Himself. It's in the Bible, Matthew 4:1, TLB. "Then Jesus was led out into the wilderness by the Holy Spirit, to be tempted there by Satan."
Satan is a defeated enemy. It's in the Bible, James 4:7, TLB. "So give yourselves humbly to God. Resist the devil and he will flee from you. And when you draw close to God, God will draw close to you."