We live in a world of fast paced lives and brief contents. By presenting an introduction to the most basic truths of the Christian faith, this Basic Course on Christian Doctrine fits very well within our times. The book was written by Juan S. Boonstra, Spanish communicator par excellence. In it, he clarifies ideas and concepts that sometimes we struggle to classify. He has arranged its content by themes, which makes it easy to access. In the first edition of this book, Boonstra said: “we might think that the Christian doctrine is not too deep because of the brevity of this book.” But, he added that this is not the case at all. We invite you to read for yourself and study the content of the Christian doctrine.