Prayer for future believers' oneness

These verses sit within Jesus’ long prayer near the end of the farewell conversation on the night before his arrest (John 13–17). Earlier in the prayer Jesus speaks about what he has finished, asks that the Father would honor him, and prays particularly for the disciples who are with him (John 17:1–19). Here the focus widens to include later believers who will come to belief through the disciples’ word. The repeated purpose statements about what “the world” will believe or know tie unity among believers to the public meaning of Jesus’ mission in the story’s unfolding.

The scene is set in late Second Temple Judaism under Roman rule, when public identity and group belonging were visible and contested. A community gathered around Jesus would be noticed within a landscape of synagogues, teachers, and competing claims about authority. In the Gospel’s later audience setting, believers likely faced social pressure and suspicion, and internal cohesion mattered for survival and credibility. Speaking of “world” and “sent” reflects a setting where messages traveled through witnesses, and communities were judged by their shared life as much as by their spoken claims.

Shared ground

Jesus’ prayer expands beyond the first disciples to include later people who will come to believe through the disciples’ message (John 17:20–23). The central request is repeated: that all these believers “may be one.” This oneness is not described as a private feeling but as a shared life shaped by the Father–Son relationship (“you in me, and I in you … one in us … I in them”).

The passage also ties unity to witness. Twice Jesus names a public outcome: the “world” will come to believe or know that the Father sent the Son, and that the Father loves Jesus’ followers in a way compared to his love for the Son. Jesus also says he has given believers the “glory” the Father gave him, and he connects that gift to their oneness.

Where interpretation differs

What “one” means. Some read “one” mainly as relational unity: shared love, loyalty, and cooperative mission that can exist across distinct groups. Others think Jesus is asking for a deeper kind of unity that is more like a single shared spiritual life, because the model is the Father and the Son being “in” each other.

What “glory” given to believers refers to. Some take “glory” as the honor and revealed life of God shown in Jesus, now shared with believers (especially through Jesus’ saving work and the Spirit). Others read it more concretely as participation in Jesus’ mission and identity as God’s sent one, which binds believers together and makes their unity visible.

What “the world” points to. Some hear “world” as humanity broadly—outsiders in general who observe the community. Others hear it more narrowly as those currently resistant to Jesus in the story, whose response becomes a test case for what this unity communicates.

Why the disagreement exists The key terms are relational and metaphor-rich (“in,” “one,” “glory,” “world”) and the passage does not spell out the mechanics. Jesus gives comparisons (“as you… so they…”) and purposes (“so that the world may…”) rather than a definition. That leaves room for readers to weigh the relational language and the public-witness purpose differently.

What this passage clearly contributes It makes explicit that Jesus includes future believers in his prayer and links their faith to the apostolic message. It presents unity among believers as patterned after the Father–Son relationship and as connected to shared participation “in” God. It also connects unity to credibility: the community’s oneness is meant to point observers to two claims—Jesus is truly sent by the Father, and Jesus’ followers are truly loved by the Father. It further adds that Jesus has already “given” something described as “glory” to support and aim at that oneness.