But after he had considered this, an angel of the Lord appeared to him in a dream and said, "Joseph son of David, do not be afraid to take Mary home as your wife, because what is conceived in her is from the Holy Spirit. Matthew 1:20. This picture is a good idea of how the angel might have spoken to Joseph. But if you think of it, maybe thats how they might come to us, just not as audible as it happened for Joseph. This image is great for Christmas, it really captures an essential part of the whole event of the Savior's birth.