The answer is: Jesus

Luke 1:31-33

David’s lineage is truly fascinating! When the scripture points out that Jesus, a descendant of David, will reign forever, it’s making a profound connection to the prophecies in both the Old and New Testaments. There’s a rich history behind David’s royal bloodline that opens up all kinds of interesting discussions!

First, let’s highlight that King David was not just any king; he is often portrayed as "a man after God’s own heart." (1 Samuel 13:14) His reign was marked not only by victories in battle but also by heartfelt psalms lamenting his own missteps, showing his deep spiritual introspection. This duality reflects a universal struggle, making David a relatable figure across time.

Now, a little trivia: among David’s many titles are “shepherd” and “songwriter.” Legend credits him with composing much of the Book of Psalms, adding layers of emotion and elegance to ancient Hebrew worship. Fast forward to Jesus; He is often called “the Son of David,” emphasizing those royal roots. The Gospel of Matthew opens right up by tracing the genealogy back to David, affirming that promise.

Lastly, the concept of an eternal reign is not just about titles but speaks to a timeless message of hope, love, and justice that echoes through generations. Just as David’s life and his connection with God have inspired many, so too does the legacy of Jesus continue to inspire a pursuit of spiritual and moral integrity today. It's quite a royal declaration!