The Gospel of John is the fourth of the four canonical gospels in the New Testament. It contains a highly schematic account of the ministry of Jesus, with seven "signs" culminating in the raising of Lazarus and seven "I am" discourses culminating in Thomas' proclamation of the risen Jesus as "my Lord and my God". The gospel's concluding verses set out its purpose, "that you may believe that Jesus is the Christ, the Son of God, and that believing you may have life in his name."

Gospel originally meant the Christian message, but in the 2nd century it 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. Modern biblical scholars are cautious of relying on the gospels uncritically, but nevertheless, they provide a good idea of the public career of Jesus, and critical study can attempt to distinguish the original ideas of Jesus from those of the later Christian authors.