Gospel

Gospel originally meant the Christian message ("the gospel"), but in the second century AD the term euangélion (Koine Greek: εὐαγγέλιον, lit. 'good news', from which the English word originated as a calque) came to be used also for the books in which the message was reported. In this sense a gospel can be defined as a loose-knit, episodic narrative of the words and deeds of Jesus, culminating in his trial and death, and concluding with various reports of his post-resurrection appearances. source: wikipedia