This book was written in 1990, which served as a study book for new converts in an evangelical church. Then, between 1994 and 1998, I wrote about 30 books in which I taught theology. I don't claim to be the owner of the truth, I just try to find the answer to the most common questions of the human mind. From 2015 to 2023 I dedicated my life to writing intensely, publishing over 200 books in Portuguese here in Brazil. It's been more than 30 years of writing mainly on topics related to the Bible, but I confess that this book was my first and still remains my masterpiece. It contains the dogmas of Christianity and a manual of sanctified life for Christians around the world. This book contains more than 1800 biblical references, for the volume of the book, it was a feat, it is the best systematic theology book in which I could synthesize all the points of the Christian faith. Arguably the best summary of Christianity.