
Light + Truth Why the Spirit Matters Now
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May 8, 2026 John Piper, Reformed pastor and author known for expository preaching and founding Desiring God, delivers a sermon on the Holy Spirit. He traces Pentecost as the Spirit’s inauguration, uses a dam analogy to explain increased Spirit power, and highlights the Spirit as creator, sustainer, teacher, and the source of courage for fearless obedience.
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Pentecost Unleashed The Spirit Like Opening A Dam
- Pentecost dramatically increased the Spirit's outpouring so the New Testament era has vastly more Spirit-presence than the Old Testament.
- John Piper uses the Aswan Dam analogy: pre-Pentecost the Spirit trickled downstream; at Pentecost the twelve turbines opened and power was unleashed.
Aswan Dam Story Illustrates Spirit's Increased Power
- Piper narrates the Aswan High Dam construction and its 1971 dedication as an illustration of increased power release.
- He describes turbines, reservoir, and how downstream people benefited more after the dam opened.
Expect More Of The Spirit Today
- Use the Old Testament record as both indictment and encouragement: don't settle for less Spirit-power than scripture suggests.
- Piper challenges listeners to ask why they wouldn't expect far more of the Spirit today.

