Let Earth Receive her King
The Lord God embedded into His creation the possibility of embrace (restoration) from rejection (corruption). The story of creation begins with purity. It moves to rebellion and corruption at the fall of mankind (Gen 3); but is offered restoration again through the person of Jesus Christ. His eternal story takes on humanity when Jesus is revealled as the "God - man" beginning with the Christmas narrative.
With the baby Jesus all the earth is given the opportunity to receive its king. "Let earth receive her king." Joy to the world the Lord has come.