would have a son through the holy spirit. we visited the church of the annunciation, the largest site devoted to mary, where roman catholics believe the miracle happened. [ traditional middle eastern music plays ] just a few blocks away is st. gabriel's church, where the greek orthodox say the annunciation was. and below st. gabriel's is mary's well, the traditional site of nazareth's spring -- the place where mary and young jesus would've drawn water. >> i don't think we need to say it was here or there to be able to affirm something beautiful and wonderful has entered our world. >> why the presence of angels in not only mary's life, but joseph's life, as well? >> in the first century, jews believed that the cosmos was filled with demons and angels and the power of god. now, this is a fact of history -- not that angels appeared, but they believed that