God can only choose the wisest and best Plan for eternity. In eternity the principles of right and wrong (good and evil) will always exist. The ability to understand these concepts is part of the human and the angelic natures. God also, created his intelligent beings with the power and freedom to choose between right and wrong.  The angels were made to live in the heavens.  Adam and Eve were given a Paradise on Earth and told to rule over the Garden.

God allowed Lucifer, the rebel angel, to oppose God, seize world rule and introduce sinful choices which lead to sorrow and death. “How you are fallen from heaven, O Lucifer . . .You said in your heart . . .I will raise my throne above the stars of God. . .” Isa 14:12-13 NIV 

Lucifer heard God tell Adam: “. . . you must not eat from the tree of the knowledge of good and evil, for when you eat from it you will certainly die.” Ge 2:17 NIV   But this information wasn’t enough to stop Adam or Lucifer and some of the angels from disobeying.  Adam and Eve choose sin and ate from the forbidden tree when Lucifer came into the Garden disguised as a serpent. Then Lucifer told the first lie. “You wont die.” Gen. 3:4 NIV God said; “The man has now become like one of us, knowing good and evil.” Gen. 3:22 NIV God’s Plan progressed. 

God always knew that goodness and righteousness would be understood best by comparing it with sin and its evil consequences.  God allowed Lucifer to come into the world and rule so He could use Lucifer to help teach how sin causes suffering, sorrow and death.  After man’s experience with sin is completed, the lessons learned will increase man’s love and praise for the Creator. Mankind will then  greatly value the path of goodness. When God’s Kingdom on earth is established, resurrected mankind will remember their horrible experiences with evil.

During that Kingdom, Christ “(will have) seized . . . that ancient serpent . . . and bound him for a thousand years.” Rev 20:2 NIV  Lucifer and the angels that joined him and don’t repent will be killed and destroyed forever. “And the angels who . . . abandoned their proper dwelling (home in heaven) . . . he has kept . . . for judgment on the great (Kingdom) Day.” Jude 6 NIV.  During that same Kingdom time, men who do not repent will also die forever.  God’s perfect Kingdom on earth, the Paradise lost when Adam sinned, will be restored and become the home to redeemed mankind. “. . . To the one who is victorious, I will give the right to eat from the tree of life, which is in the paradise of God.” Rev 2:7 NIV   “Then I saw. . .a new earth. . . (God) will wipe every tear from their eyes. There will be no more death or mourning or crying or pain, for the old order of things has passed away . . . Those who are victorious will inherit all this, and I will be their God and they will be my children.” Re 21:1-7 NIV

This evil world ruled by Lucifer is also a special test for Christians and an opportunity to prove their love and obedience to righteousness through experiences that cause suffering.  In this way, Christians may follow Jesus’ example:  “Whosoever will come after me, let him deny himself, and take up his cross, and follow me. “ Mark 8:34   Victorious Christians will be “heirs of God, and heirs together of Christ” of the Kingdom. Rom 8:17 YLT As heirs, they will have the honor of assisting Jesus to bring God’s Kingdom. “To the one who is victorious, I will give the right to sit with me on my throne, just as I was victorious and sat down with my Father on his throne.”      Rev 3:21NIV   God’s promised seed, will do it’s work: “. . . in you and in your descendants shall all the families of the earth be blessed.” Ge 28:14 NASB

Eventually, everyone who learns to love God more than anything else and to hate everything that is opposed to God’s will be blessed forevermore.  This has always been God’s Plan.