God is all knowing. Did He know Lucifer's rebellion would bring sin and death into the world?
God created everything very good. His kingdom is sinless. He is eternal, perfect, powerful, and without sin. Yet He couldn't create perfect beings, because then they would be God. God cannot create God, so what He creates must be less than He is. His creation of beings in His own image necessarily included mind and will (freedom to choose for themselves). Freedom of choice is very important, as God would never create people and angels as robots. Yet, freedom of choice remains only a theory, until it is tested. This testing of free will puts quite a 'strain' on God: He has to watch and see His creatures making the wrong choices, without interfering.
Since the angels were not perfect, the possibility of rebellion was present. The verse in Ezekiel 28:15 explains it: 'you were blameless in your ways from the day you were created till wickedness was found in you.' (Please note that many liberal theologians don't accept that this verse applies to the devil. Since they reject the reality of the devil anyway, and since these verses in Ezekiel 28:12-16 cannot apply to a human being, don't take any notice of them.) Isaiah 14:13-15 explains it very well: "You said in your heart, 'I will ascend to heaven; I will raise my throne above the stars of God; I will sit enthroned on the mount of assembly, on the utmost heights of the sacred mountain. I will ascend above the tops of the clouds; I will make myself like the Most High.'" The exulted angel, Lucifer, became proud and thought he could usurp God's place. Revelation 12:7-12 explains the outcome: There was war in heaven, he lost, was expelled and hurled to the earth. He is filled with fury since he knows his time is short. That fury explains the seductions in the world, to rob God of His glory by deceiving and leading the whole world astray. (Again, watch out for preachers and theologians who oppose this. See the excellent book of Dr Ed Murphy, The Handbook for Spiritual Warfare.)
Now for the big question: did God know all this would happen? Surely, He is omniscient, and knows the future as well as the past and everything in between. Why did He allow it? Couldn't He have prevented it or gotten rid of the devil? Yes, but God is using the devil for His purpose.
- What would have happened if man is not tested? Maybe 10 million years down the line he decides that he is tired of God's dominion and wants to be free. God would never allow another rebellion like that of Lucifer in His kingdom.
- Man has to be tested, like the angels were. The angels saw God, and yet the devil rebelled. (His sentence is so severe, because he was in God's presence, and yet betrayed Him and he is the cause of the bloodshed and all the terrible sins on the earth.)
- To give man a choice, God used Lucifer to be an alternative 'bridegroom' in addition to Jesus.
- For most of us, Jesus is an invisible Bridegroom, so the devil also had to be an invisible bridegroom. Angels are invisible to us and are eternal created beings, so the devil fitted the bill perfectly.
God used the fall of Lucifer and man so that His kingdom would be filled with beings that have proven their love for His Son and can be trusted to be loyal to their Bridegroom for all eternity. (During their life time people have many opportunities to reject and betray Jesus and to stay in the devil's kingdom of darkness.)
One of the effects of the curse is that the earth is slowly being destroyed (it wears out like a garment). Naturally that fits into God's plan, as He is going to renew the present earth to an eternal, supernatural, beautiful planet. Nobody wants to destroy a beautiful home or place, but it is perfectly understandable if a rundown, dilapidated place is renovated. Everything that happens on earth at present, that happened in the past, and will yet happen, in the future fits into God's wonderful plan for man: the eternal kingdom of glory and love, where we will live for ever in the presence of the Trinity, whose glory will illuminate the earth (remember there will be no sun, so the plants will be entirely different. They will be eternal, supernatural and bear very nourishing, tasty [and free] fruit twelve times a year.) We can only glory in our brilliant Lord who is so wise and has such love for His creation and His people.