"Therefore the Lord Himself will give you a sign. Behold, the vigin shall conceive and bear a Son, and shall call His name Immanuel." (Isaiah 7:17)
Even in the days of His birth, those looking for proof of who Christ was, could find it. But like today, many reject the truth that lies in a cradle in Bethlehem, dies on a cross for us, and rises from the dead to give us access to God and eternal life. Through the prophet Isaiah, God told His people exactly how their savior would enter this world and what he was to be called, Immanuel..."God with us". God still inhabits the hearts of His children. Have a blessed day.