But as he [Joseph] considered these things, behold, an angel of the Lord appeared to him in a dream, saying, “Joseph, son of David, do not fear to take Mary as your wife, for that which is conceived in her is from the Holy Spirit. She will bear a Son, and you shall call His Name Jesus, for He will save His people from their sins.” All this took place to fulfill what the Lord had spoken by the prophet: “Behold, the virgin shall conceive and bear a Son, and they shall call His Name Immanuel” (which means, God with us). (Matthew 1:20-23)