ANSWER: Notice that this particular passage is a continuation of the discussion about fasting in verses fourteen and fifteen. Jesus was telling His disciples in verse seventeen, that just as it was unfitting to put “new” wine in “old” bags (bottles), because both the wine and the bags would be destroyed, it was also unfitting and improper that they should fast after the manner of the Pharisees. In other words just as “new” wine and “old” bags do not go together, neither does my teaching about fasting agree with the Pharisee’s doctrine about fasting!