John 16:13
When the Spirit of truth comes, he will guide you into all the truth; for he will not speak on his own, but will speak whatever he hears, and he will declare to you the things that are to come — the Spirit's function is to lead progressively into truth (hodos—way, path; guiding into all truth is a journey, not instantaneous). The Spirit does not originate new doctrines but speaks what he hears from the Father; he is a faithful interpreter of the Word Jesus has spoken. The Spirit guides the disciples not into abstract truth but into living understanding of Jesus Christ, the Truth incarnate. The promise that the Spirit will declare things to come (ta erchomena—the things coming) suggests prophetic illumination and interpretation of Scripture.