When Jesus was born, the angel appeared to Joseph and told him he and Mary would have a son. Matthew comments that this all took place to fulfill the prophecy of Isaiah.

22 All this took place to fulfill what the Lord had said through the prophet: 23 “The virgin will conceive and give birth to a son, and they will call him Immanuel” (which means “God with us”). Matt. 1:22-23 NIV

“God with us” is such a beautiful expression. Ezekiel used a similar thought to describe the ushering in of the city of God – the New Jerusalem:

“And the name of the city from that time on will be:

THE LORD IS THERE. Ezek. 48:35 NIV

The key feature of the New Jerusalem is the very presence of God. In Revelation, John wrote that in the New Jerusalem there will be no temple nor sun because God and the Lamb are there and will be both the temple and the light.
In Acts 17, Paul told the men at the Areopagus:

27 God did this so that men would seek him and perhaps reach out for him and find him, though he is not far from each one of us. 28 For in him we live and move and have our being.’ As some of your own poets have said, ‘We are his offspring.’ Acts 17:27 NIV

James reminded the brethren of God’s nearness to true believers:

8 Draw near to God, and he will draw near to you. Jas. 4:8a ESV
As we consider the Lord’s Supper, Christ ordained this feast to be celebrated as a regular reminder of his nearness to us. In the bread and the wine, we see the very body of Jesus – his flesh and his blood. Our obedience to keeping this observance is tied to his presence with us, even as Jesus said this:
Judas (not Iscariot) said to him, “Lord, how is it that you will manifest yourself to us, and not to the world?” Jesus answered him, “If anyone loves me, he will keep my word, and my Father will love him, and we will come to him and make our home with him. John 14:22-23 ESV
On this Christmas day, many will contemplate the words of Isaiah and Matthew: “He shall be called Immanuel (which means God with us)”. He was with us in his birth and remains with us in his death, resurrection and glorification. Could there be a more fitting way for Christians to observe this truth than to eat the Lord’s Supper?

And he took bread, and when he had given thanks, he broke it and gave it to them, saying, “This is my body, which is given for you. Do this in remembrance of me.” Luke 22:19