Theophylact of Ohrid — as excerpted in the Catena Aurea on Luke 5:27-32

“Or the publican is he who serves the prince of this world, and is debtor to the flesh, to which the glutton gives his food, the adulterer his pleasure, and another something else. But when the Lord saw him sitting at the receipt of custom, and not stirring himself to greater wickedness, He calls him that he might be snatched from the evil, and follow Jesus, and receive the Lord into the house of his soul.”