6 For a child has been born for us, a son given to us; authority rests upon his shoulders; and he is named Wonderful Counselor, Mighty God, Everlasting Father, Prince of Peace.
7 His authority shall grow continually, and there shall be endless peace
for the throne of David and his kingdom. He will establish and uphold it with justice and with righteousness from this time onward and forevermore. The zeal of the Lord of hosts will do this. – Isaiah 9:6-7 (NRSV)
This prophecy was fulfilled in Luke 2 when the virgin Mary gave birth to the baby Jesus. God would keep His covenant with David that a member of David’s household would always occupy the throne of Israel. Jesus would not establish His earthly kingdom at that time, but it will be completely fulfilled when the new Jerusalem is established. It will be an eternal kingdom with Jesus as the last king. Jesus is the Prince of Peace, Mighty God, and the everlasting Father. We can celebrate the birth of Jesus because it is another assurance that God never fails to keep His covenants and His promises. He is an awesome, amazing God who holds us in the palm of His hand and we can never be separated from Him. He inhabits the praises of His people, so praise Him continually and “forget not all His benefits”.