Gregory the Great
Catena Aurea · Markusevangelium 16
Now when Jesus was risen early the first day of the week, he appeared first to Mary Magdalene, out of whom he had cast seven devils. And she went and told them that had been with him, as they mourned and wept. And they, when they had heard that he was alive, and had been seen of her, believed not. After that he appeared in another form unto two of them, as they walked, and went into the country. And they went and told it unto the residue: neither believed they them.
(Hom. in Evan. xxix.) That the disciples were slow in believing our Lord’s resurrection was not so much a weakness of theirs as it is our strength. For the resurrection itself through their doubts was manifested by many proofs; and whilst we read and acknowledge them, what do we but become firmer through their doubting? There follows, After this he appeared in another form unto two of them as they walked and went to a farm house.