OLD TESTAMENT PROPHECY:
"Therefore the Lord Himself shall give you a sign; Behold, a virgin shall conceive, and bear a Son, and shall call His name Immanuel"
(translated from Hebrew עִמָּנוּאֵל (`Immanuw'el), to English - Isa. 7:14)!
NEW TESTAMENT FULFILLMENT:
"Now the birth of Jesus Christ was on this wise: When as His mother Mary was espoused to Joseph, before they came together, she was found with child of the Holy Ghost. Then Joseph her husband, being a just man, and not willing to make her a publick example, was minded to put her away privily. But while he thought on these things, behold, the angel of the Lord appeared unto him in a dream, saying, Joseph, thou son of David, fear not to take unto thee Mary thy wife: for that which is conceived in her is of the Holy Ghost. And she shall bring forth a Son, and thou shalt call His name JESUS: for He shall save His people from their sins. Now all this was done, that it might be fulfilled which was spoken of the Lord by the prophet, saying, Behold, a virgin shall be with child, and shall bring forth a Son, and they shall call His name Emmanuel, which being interpreted is, God with us"
(translated from the Greek Ἐμμανουήλ (Emmanouēl), to English - Mt. 1:18-23)!
What is important, is that Jesus was the "God (who is) with us." We know Jesus taught that only God was to be worshipped. He said, "Thou shalt worship the Lord thy God, and Him only shalt thou serve" (Mt. 4:10). And yet, He accepted the worship of the Maji (Mt. 2:11); the leper (Mt. 8:2); the ruler (Mt. 9:18); those in the ship (Mt. 14:33), the mother of a possessed girl (Mt. 15:22-25), and "Mrs. Zebedees" (Mt. 20:20; etc.). Jesus knew He was the Immanuel of the prophet, and the Emmanuel of the Apostle!
If you know He is the God who is with us,
then be the person in whom others see as being with Him!