The promise that an offspring of the woman would come to crush the serpent’s head, the son of David would establish a kingdom for man and God to live together forever, the suffering servant would take humanity’s pain upon himself, and many other promises of advent, all came together in the birth of one Son. He was named Jesus, YHWH saves, and he was called Immanuel, because God had come to be with us.
The Suffering Servant
The king and kingdom of Israel seemed to be something of the past. They were in exile, and every king they ever had failed them - even the best of them had passed away. God continued to speak through prophets to let His people know He was still pursuing them. Through the prophet Isaiah, the Lord told them that one day the promised Rescuer would come and take away their sorrow and suffering - and that he would take it upon himself. We can have joy because this Suffering Servant has taken our sorrow.
The Better King
King David wanted to build a house for the Lord. It seemed like a good idea. But God didn’t need David to build anything for Him. Instead, it was the Lord who would build a house for David, all of Israel, and all of those in Christ. Jesus, the better King, came to dwell on earth and has gone to heaven to prepare a home - one for God and mankind to dwell in together forever - one where Jesus reigns as King forever. Welcome home.