The scribes and the Pharisees had concluded that being with the sinners made you and unclean sinner.
Apples: When apples begin to decay, they emit gases. If the rotting apple is mixed in with a group of other apples, the good apples can absorb these gases and begin to rot, too. Of course, we don't always buy apples in big bunches today.
A sick apple makes other apples sick, those of you who have little children understand this. I’ve prayed for sicnesses.