Fruitfulness is the plan and will of God for mankind. God, therefore made it possible for man to be productive or fruitful. No age limit in being fruitful.
The book is practical, profound, and explicit in its presentation to instruct Christians and Ministers on the essence of a productive life. You too can apply what you read in this book to your peculiar situation and experience "Rehoboth" and glorify God by being fruitful in the land.