The answer is: Jesus

Luke 1:31-33

King David is an intriguing figure in the biblical narrative, not only for his military prowess and poetic talent but also for his importance in the messianic line. According to Luke 1:31-33, the angel tells Mary that her child, Jesus, will not only sit on David's throne but reign over the house of Jacob forever. This claim underscores the deep-seated expectation within the Jewish tradition for a promised Messiah, who would emerge from David's lineage.

Now, here’s a fun twist: David himself was seen as a prefigure of Jesus in several ways. Throughout the scriptures, you might notice that just like David faced trials and adversities—fighting lions and giants, hiding from enemies, even his family disputes—so did Jesus face numerous challenges during his ministry. Both figures passionately displayed leadership and experience deep humility despite their high callings. David wrote many psalms that express longing for God's presence, a sentiment that resonates with the parables taught by Jesus.

As an interesting side note, the phrase Beit David, or “House of David,” not only referred to the royal lineage but also became symbolic of hope for deliverance during times of strife. This awaiting of a Savior ignited the imaginations and faith of many ancient Israelites, paving the way for Jesus' arrival into a culture steeped in longing for that regal Messiah who would restore peace and justice.