Gregory the Great
Catena Aurea · Matthäusevangelium 11
And as they departed, Jesus began to say unto the multitudes concerning John, What went ye out into the wilderness to see? A reed shaken with the wind? But what went ye out for to see? A man clothed in soft raiment? behold, they that wear soft clothing are in kings’ houses. But what went ye out for to see? A prophet? yea, I say unto you, and more than a prophet. For this is he, of whom it is written, Behold, I send my messenger before thy face, which shall prepare thy way before thee.
(ubi sup.) For the Greek word Angel, is in Latin Nuntius, ‘a messenger.’ He therefore who came to bear a heavenly message is rightly called an Angel, that he may preserve in his title the dignity which he performs in his office.