Final answer:
The Gospel of John is best described as a Greco-Roman biography, focusing on the life and teachings of Jesus Christ and aimed at providing moral and theological insights.
Step-by-step explanation:
The Gospel of John is best described in terms of literary genre as a Greco-Roman biography. This genre is characterized by the focus on the life and teachings of a central figure, which in the case of John's Gospel is Jesus Christ. Unlike an apocalypse, which reveals divine mysteries, a general history, which covers broader historical narratives, or a Greco-Roman novel, which is fictional in nature, the Greco-Roman biography aims to recount the life of a real person, often with a focus on moral or philosophical lessons drawn from that person's life.
John's Gospel fits the kind of writing that was popular in Greco-Roman culture for recounting the lives of significant individuals. It shares the aim of a Greco-Roman biography to not only inform but also to provide moral and theological insights based on the account of Jesus's life. The four gospels, including John’s, are foundational texts in Christianity that portray the life, death, and resurrection of Jesus. Their purpose extends beyond mere historical accounts, as they serve as religious teachings for the Christian faith.