Glossa Ordinaria
Catena Aurea · Matthäusevangelium 9
And as Jesus passed forth from thence, he saw a man, named Matthew, sitting at the receipt of custom: and he saith unto him, Follow me. And he arose, and followed him. And it came to pass, as Jesus sat at meat in the house, behold, many Publicans and sinners came and sat down with him and his disciples. And when the Pharisees saw it, they said unto his disciples, Why eateth your Master with Publicans and sinners? But when Jesus heard that, he said unto them, They that be whole need not a physician, but they that are sick. But go ye and learn what that meaneth, I will have mercy, and not sacrifice: for I am not come to call the righteous, but sinners to repentance.
(ap. Anselm.) The Publicans were they who were engaged in public business, which seldom or never can be carried on without sin. And a beautiful omen of the future, that he that was to be an Apostle and doctor of the Gentiles, at his first conversion draws after him a great multitude of sinners to salvation, already performing by his example what he was shortly to perform by word.