Augustine of Hippo
Catena Aurea · Matthäusevangelium 12
While he yet talked to the people, behold, his mother and his brethren stood without, desiring to speak with him. Then one said unto him, Behold, thy mother and thy brethren stand without, desiring to speak with thee. But he answered and said unto him that told him, Who is my mother? and who are my brethren? And he stretched forth his hand toward his disciples, and said, Behold my mother and my brethren! For whosoever shall do the will of my Father which is in heaven, the same is my brother, and sister, and mother.
(De Nat. et Grat. 36.) But whatever may be decided concerning these brethren, yet concerning the holy Virgin Mary, (for the honour of Christ,) when sin in her is in question, I would not have it brought into doubt. For from this only we might know that more abundant grace was conferred upon her that she should overcome sin on all sides, because she merited to conceive and bring forth Him Who it is clear had no sin. It follows; Then said one unto him, Behold, thy mother and thy brethren stand without seeking thee.