Why Isaiah 40:5 Matters for Christmas

John MacArthur opens the lesson by pointing to Isaiah 40:5, where the prophet says, “the glory of the Lord shall be revealed.” He asks listeners to consider how this prophetic line becomes the heart of the Christmas story. The birth of Jesus is presented as the moment the long‑awaited revelation of God’s glory enters the world, turning a quiet promise into a living reality.

What the Transfiguration Teaches About God’s Glory

MacArthur then turns to the mountain scene in Matthew 17, where Jesus’ face shines and a voice declares Him the beloved Son. He uses this event to illustrate that God’s glory is not merely an abstract idea but a visible, audible presence. The appearance of Moses and Elijah beside Jesus is highlighted as a confirmation that the Son is the very voice and power of God. The discussion invites listeners to ask why the disciples were shown the law and the prophets alongside the Messiah, and what that reveals about the nature of the glory that was made manifest.

Seeing Christ: From Image to Transformation

MacArthur explains that Christ is described in Hebrews as “the brightness of His glory” and the “image of God.” He stresses that this image is not a simple copy but the very essence of God made flesh. The lesson then moves to the idea that when believers look at Christ, they are transformed into His image—a process that echoes the story of the ugly duckling, which MacArthur uses as an illustration of how a new identity can emerge when one encounters divine beauty.

Why the Transformation Matters

The teaching concludes by inviting listeners to consider how this transformation happens in everyday life. MacArthur leaves the deeper application for the full audio, encouraging listeners to explore how the revelation of God’s glory in Christ can change the way they live and celebrate the season.

To hear how these themes unfold and to discover the deeper questions John MacArthur raises about the true meaning of Christmas, listen to the complete audio.