Quoted from the Online Etymology Dictionary: "O.E. godspel "good news," from god "good" + spel "story, message," translation of L. bona adnuntiatio, itself a translation of Gk. euangelion "reward for bringing good news.""
Generally, the term Gospel refers to the first four books of the Christian New Testament: Matthew, Mark, Luke, and John.
"The four Gospels can only be understood with the key of Sexual Magic and the Perfect Matrimony. The four Gospels were only written to serve as a guide to the few who follow the path of the razor’s edge. The four Gospels were never written for the multitudes. The work of adapting the cosmic drama to the new age was marvelous. Secret groups of initiates took part in this work. They did a splendid job. When profane people study the Gospels, they misinterpret them." - Samael Aun Weor, The Perfect Matrimony