The Gospel according to John is quite different in character from the three synoptic gospels. It is highly literary and symbolic.  To a much greater degree, it is the product of a developed theological reflection and grows out of a different circle and tradition. It was probably written in the 90s of the first century.

The Gospel of John begins with a magnificent prologue, which states many of the major themes of the gospel, much as an overture does for a musical work. The prologue proclaims Jesus as the preexistent and incarnate Word of God who has revealed the Father to us.

The gospel narrative contains a series of "signs"—the gospel's word for the wondrous deeds of Jesus. The author is primarily interested in the significance of these deeds, and so interprets them for the reader by various reflections, narratives, and discourses.