When it was discovered that Mary was pregnant, Joseph knew it wasn't his child. Being a just man, he planned to divorce Mary secretly, so as not to expose her to additional public shame. But an angel of the Lord came to him in a dream and told him that Mary had indeed conceived by the Holy Spirit and that her son would be the Savior of the world. Joseph obeyed the word of the Lord, changed his mind, married Mary, and named the new baby boy "Jesus."
**NOTE: First minute of audio is missing.