Spurgeon’s own experiences in the maze of life help others fight doubt. The book is not meant to be a formal argument but is given to assist a friend. As the preface says: How I have personally threaded the labyrinth of life thus far, may be of helpful interest to some other soul which just now is in a maze. I hope that by these pages some true heart may be assisted to ‘fight his doubts and gather strength.’ The book contains 70 passages to help a person in times of doubt.