This book explains what happens to those who never hear about the gospel.
Written with both the Christian and non bible reader in mind it liberally quotes the text of the bible to show that the righteous - those who go to heaven - includes Christians and many non-Christians who unknowingly are already following Christ just as the centurion Cornelius was for example (Acts 10:35), before he ever heard of Jesus. The wicked - those who go to hell - includes non-Christians and many so-called Christians: it is those who practice righteousness who are seen in the bible as the ticket holders to heaven.
In this new edition 'The meaning of born again' explains how the righteous amongst non-Christians are already born again. As John put it so well 'If you know that He is righteous, you know that everyone who practises righteousness is born of him' 1 John 2:29