The end of the Bible describes the return of Jesus Christ and the final judgment, where each individual is judged according to their deeds. Those who have lived a righteous and faithful life will be given eternal life in heaven, while those who have rejected God will be cast into eternal punishment.
The book of Revelation details this end time scenario, which includes a great battle between good and evil, and the defeat and ultimate destruction of Satan. The book describes a new heaven and a new Earth, a place where God dwells with his people, and there is no more pain, death, or suffering.
The end of the Bible can be seen as a positive message of hope and salvation for those who have accepted God's love and grace, and a warning to those who have rejected Him.