Pseudo-Chrysostom
Catena Aurea · Matthäusevangelium 1
Now the birth of Jesus Christ was on this wise: When as His mother Mary was espoused to Joseph, before they came together, she was found with child of the Holy Ghost.
For, as a not incredible account relates, Joseph was absent when the things were done which Luke writes. For it is not easy to suppose that the Angel came to Mary and said those words, and Mary made her answer when Joseph was present. And even if we suppose thus much to have been possible, yet it could not be that she should have gone into the hill country, and abode there three months when Joseph was present, because he must needs have enquired the causes of her departure and long stay. And so when after so many months he returned from abroad, he found her manifestly with child.