First, I want to point out some interesting features of this story

What I mean, is the way Luke puts it together
– for example, Mary asks a question that divides Gabriel’s message in two
• the first part in verses 30-33, he tells her what was going to happen
• the second part in verses 34-37, he tells her how it will happen
– both messages began with what would happen to her – “YOU”
• then he explained what the child would become – “HE”
• finally, Gabriel tagged something extra to end of messages
◦ he informed Mary of Elizabeth’s pregnancy
◦ this was to emphasize a specific point to reassure Mary