In Christianity, a gospel (from Old English, "good news") is generally one of four canonical books of the New Testament that describe the birth, life, ministry, crucifixion, and resurrection of Jesus, but also encompasses numerous non-canonical texts, see list of gospels.
The four canonical texts are the Gospels according to Matthew, Mark, Luke and John, probably written between 65 and 100 AD. More generally, the term refers to works of a genre of Early Christian literature. It originally meant the "good news" (evangelium) of redemption.
The first canonical gospel written is Mark (c 65-70), which in turn was used as a source for the gospels of Matthew and Luke. Matthew and Luke may have also used a common source, the hypothetical Q document. These first three gospels are called the synoptic gospels because they share a similar view. The last gospel, the gospel of John, presents a very different picture of Jesus and his ministry from the synoptics. The canonical gospels were originally written in Greek.