The angel Gabriel had spoken of “the throne of David” to be inherited by Mary’s Son, Jesus. (1:33). Zechariah had spoken of “the house of David”(1:73). In the next section of the story, we visit “the city of David” with Mary and Joseph, who is “of the house and lineage of David.”
Their travel from Nazareth to Bethlehem comes about because the ‘King’/Emperor of the day, Caesar Augustus, gave a decree. Over and above Caesar, God is in control. The King of Kings, who is also the Davidic King of Old Testament promise (1 Samuel 7:14) is to be born, the ancient prophecies and Divine promises are being fulfilled (Psalm 2 etc).
But where will He be born in Bethlehem? In a stable! For He is also the Suffering Servant (Isaiah 53), the rejected Cornerstone(Psalm 118). This Servant King, the Son of Man who Will walk the road of suffering to a throne of Glory, is the One of whom Paul would write,“though He was rich, yet for your sake He became poor, that you, through His poverty, might become rich.”
What a summary, in one verse, of God made flesh!
Ours is to give thanks and worship.