In the fourth and final episode of Promised & Fulfilled, hosts Greg and Nathan turn to one of the most hope-filled promises in all of Scripture. In “A Light to the Nations: Isaiah’s Vision of Redemption,” they explore Isaiah 9 and the breathtaking declaration that a great light would shine on people walking in darkness.

Spoken into a time of judgment, fear, and uncertainty, Isaiah’s prophecy points forward to a coming King—one whose reign would bring peace without end. Greg and Nathan unpack how this promise finds its fulfillment in the birth of Jesus Christ, announced to the shepherds as “a Savior… who is Christ the Lord” (Luke 2:11) and revealed as the true light who overcomes the darkness (John 1:4–5).

This episode explores:

The historical and spiritual darkness surrounding Isaiah’s prophecy

The meaning behind the messianic titles: Wonderful Counselor, Mighty God, Everlasting Father, Prince of Peace

How Jesus embodies the light, peace, and righteous rule foretold by Isaiah

What it means to live today in the tension of the “already and not yet” of Christ’s kingdom

As the series concludes, this conversation invites listeners to rejoice that the light has already come—and to live with hope as we await the full and final fulfillment of His eternal reign.

“The people who walked in darkness have seen a great light.” (Isaiah 9:2, ESV)