This book is specially designed to offer the keys of understanding the message of Jesus and that this can be understood in the realities of each age. Reading the Gospels requires knowing how to interpret their historical and sociological background in order to understand the person of Jesus and the authentic theological meaning of his message. As the Gospels were written in an ancient age and in a cultural environment where the conceptual and symbolic universe, on the one hand, and modes of expression, on the other, were very different from ours, it has often been difficult for the Modern Christians understand thoroughly the meaning of many of their passages. The authors, Juan Mateos and Fernando Camacho, carry out a work of contextualization and analysis of the four gospels in order to be able to understand their significance in the plural society of our time. Thanks to his direct style and informative intention, this book is enlightening both for readers already familiar with the Christian language and categories and for the reader without religious training who expresses interest in understanding the message of Jesus.