A wise man once said that we should not fear death, for it is God's way of inviting us to Him. Why should we decline His invitation?
When our Lord Savior descended into the realm of the dead, He extended His hand to the first Adam, thus breaking the curse that forced all the dead to be brought into a land of suffering and despair.
Death took a new form by becoming a way for us to reach God. Evil and death, however, still exist as a consequence of negative choices, but they will be abated when history has come to an end.
This moment will mark the instauration of a new existential order and the judgement of all mankind.
Those who will not answer the Lord, will be sent to Gehenna; nevertheless, we learn that this will not be a permanent state, either. The Crucifixion of Jesus Christ ended the eternity of hell just as God will end death and sin with the definitization of the Kingdom of Heaven.
The Kingdom itself represents the new age, and it will be a place populated by all kinds of heavenly life forms. Here, humans will be able to live in communion with God.
Furthermore, the Kingdom of Heaven will have a hierarchy-based structure, each of us having a different relationship with God similar to how the stars differ from one another in splendor.
Based on Jesus Christ in the Light of the Holy Scriptures.