Gospel and the doctrine and history of Jesus Christ. It is each of the four major books of the New Testament. It is each of the passages from the New Testament that are read during the liturgy of the mass. It is a word of Greek origin that means "Good News". Evangelizing is the act of spreading the message of Christ and an evangelist is the author of any of the four Gospel books.
In the New Testament of the Holy Bible there are four gospels that narrate the life story of Jesus reporting all the events inherent in his life on earth and the teachings on the doctrine Christian. Its authors were the evangelists Matthew, Mark, Luke and John. These four gospels were legitimately recognized by Christianity and adopted as the first books of the New Testament receiving the designation of "Canonical Gospels".
Several other gospels have been written about the life of Jesus Christ, for example, The Gospel According to S. Thomas or The Gospel according to S. Judas. However, these gospels were not recognized by the Christian religion because they were not considered of divine inspiration, which is why they are not part of the canon. They are then called "apocryphal gospels".
In the figurative sense, the gospel is what is taken for granted, or what is fully credible.