Eternal Heaven and Eternal Hell are literal places of final destiny, each as eternal as the other. (Matthew 25:41-46; Luke 16:22-28)
The Bible teaches that Hell is as eternal as Heaven. After life on earth, Heaven or Hell will be the eternal abode, depending upon how each person responded to God's call to salvation. There can be no preparation for eternity after death, for God has ordained that the choice is made in this life.
Heaven is the abode of God, where the Redeemer has gone and from which He will someday come for His own. Hell was prepared for the devil and his angels, and is a place of literal, burning flame where the wicked dead will spend eternity cut off from the presence of God.
Matthew 25:41-46; Mark 9:43-44; Luke 16:24; Revelation 14:10-11