Rabanus Maurus
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.
He therefore warns them, that by deeds of mercy they should seek for themselves the rewards of the mercy that is above, and, not overlooking the necessities of the poor, trust to please God by offering sacrifice. Wherefore, He says, Go; that is, from the rashness of foolish fault-finding to a more careful meditation of Holy Scripture, which highly commends mercy, and proposes to them as a guide His own example of mercy, saying, I came not to call the righteous but sinners.