God has a book in which He records the names of all persons who will go to Heaven, and this is one book that you will want your name in (Luke 10:20; Philippians 4:3). In order to be written in this book, a person must obey the gospel of Jesus Christ and not only that, but remain faithful in the service of the Lord (Revelation 2:10; 2 Timothy 4:6-8; Rev. 3:5).
A person could start out right with the Lord, but fall out of favor by willfully sinning and God will blot that person’s name out of the book of life (Exodus 32:33). You don’t want that to happen to you. On the Day of Judgment, men will stand before Jesus Christ to be judged according to their works and all whose names do not appear will be cast into the everlasting lake of fire which is hell (Rev. 20:10-15).