The Gospel tells us that Jesus Christ died for our sins, was buried, rose from the dead, and from heaven today offers Himself as a living Saviour and personal Lord. Receiving Him by faith brings a change right now in the life. "For me to live is Christ". We should not need to bring sophisticated arguments to convince anyone that Christianity brings a new life which is centered in Christ. The very name, Christianity, tells us that.
But it is especially in the next life that Christianity stands apart from all other beliefs. Christ is the key for this too of course. The Believer enjoys precious promises because of and through Jesus Christ alone. Notice the way that Paul expressed his hope for the time when he would have to face death . "...And to die is gain." For those without salvation, death is total loss. The difference is the salvation through Christ. Paul goes on further in the same chapter to say, "having a desire to depart, and to be with Christ; which is far better" (Philippians 1:23b).
Bible Christianity makes sure promises for eternity, while other beliefs and religions leave a person on his own when death comes. It is hard to imagine anything worse than being let down when facing a matter as important as where you will spend eternity. Paul was assured that he had salvation from hell and a promise of heaven. Every born again Christian has the same privilege to take great comfort in the fact that, "the gift of God is eternal life through Jesus Christ our Lord" (Romans 6:23b).