What does John 20:31 mean?

John 20:31 comes at the close of what many scholars regard as the original ending of John's Gospel, immediately following the account of Thomas touching Jesus's wounds and declaring "My Lord and my God!" In this verse, John steps back from the narrative to tell his readers directly why he wrote everything they have just read. In plain language, he is saying: I did not record these signs and events randomly or simply to preserve history—I selected and wrote them for a specific purpose, so that you would believe something particular about Jesus, and so that this belief would result in a particular kind of life.

Regarding its context, the Gospel of John was written by the apostle John (traditionally identified as "the disciple whom Jesus loved") likely toward the end of the first century, for a Christian community grappling with questions about who Jesus truly was. Unlike the Synoptic Gospels, John is selective and thematic, built around seven or eight carefully chosen "signs" (miracles) that reveal Jesus's identity—turning water to wine, healing the blind, raising Lazarus, and so on. This verse functions as John's own stated thesis: everything preceding it, from the prologue's declaration that "the Word became flesh" to the resurrection appearances, has been building toward this confession of faith. He is not writing a comprehensive biography but a theological argument dressed in narrative form, and here he tells us so explicitly.

Theologically, this verse packs a great deal into a short space. First, it identifies two essential truths about Jesus that John wants his readers to believe: that Jesus is "the