Gregory of Nyssa
Catena Aurea · Lukasevangelium 5
And after these things he went forth, and saw a Publican, named Levi, sitting at the receipt of custom: and he said unto him, Follow me. And he left all, rose up, and followed him. And Levi made him a great feast in his own house: and there was a great company of Publicans and of others that sat down with them. But their Scribes and Pharisees murmured against his disciples, saying, Why do ye eat and drink with Publicans and sinners? And Jesus answering said unto them, They that are whole need not a physician; but they that are sick. I came not to call the righteous, but sinners to repentance.
Or, He means that the sound and righteous need no physician, i. e. the angels, but the corrupt and sinners, i. e. ourselves do; since we catch the disease of sin, which is not in heaven.