What does John 7:39 mean?
During the last and most important day of the Feast of Booths, Jesus has chosen a dramatic time to make a dramatic point. On this day, priests would carry water into the temple, remembering God's provision of water from a rock (Exodus 17:1–7). Jesus uses this moment to emphasize His claim to being the source of "living water," which is a metaphor for salvation and the indwelling of the Holy Spirit. This is a theme Jesus has used before in His teaching, both publicly (John 6:35), and in private (John 4:10–13). Later New Testament writers will continue to draw from this analogy when describing the salvation offered by God through Christ (Revelation 22:1–2).At this point in time, the Holy Spirit is working only selectively in the world. Perhaps the most dramatic example of the Holy Spirit's temporary work is in the story of Samson, who was given strength when the Holy Spirit was within him (Judges 14:6). Only after Jesus' death and resurrection, followed by His ascension, will the Holy Spirit begin to indwell everyone who professes faith in Christ (Acts 2:1–4).