Jesus's listeners thought they were good people because they hadn't suffered similar fate to those Galileans whose blood were mingled with their sacrifice. They associated physical suffering with some evil done. Don't deceive yourself thinking that righteousness is measured by level of physical suffering. The key thing is the fruit you bear; which come by repentance. By their fruits you will know them.
Christ obviously shocked by His listeners line of reasoning sought to point them to the right path, by using the analogy of a fig tree. Repent or Perish. By our own standard we think we're better than others. By the listeners of Christ their measuring tape was the level of physical suffering. Note the vineyard dresser's report- the tree was full of life; no physical damaged, and yet the vineyard owner found no fruit. The vineyard owner couldn't hide his disappointment. We all do when we thought we have done all what we could to receive something positive and all we get is negative; when we thought we've done all we could to expect good behaviour from our children and all we get is bad behaviour. It's very natural that we'll feel disappointed. Since we're amongst the seed that fell on good ground, we're expected to produce fruits. The vineyard owner had waited far too long.
Years ago I watched a film called "save the last dance". In the film was a lone parent with a baby boy. The boy's father was supposed to come and get him for a weekend, but always had an excuse that he had to go to work. One day this lady who obviously has had enough of the man's excuse exploded "I ain't seen the fruit of that labour". "What do you think I feed your son with, oxygen"? In other words, why don't I get some fruit of your labour?
Friends, we've been in the Christian Ministry for a long time. The vineyard owner needs some fruit to celebrate His investment. Christ himself and the apostles suffered a lot for the gospel. It's time we begin to bear fruit of that investment. John the Baptist said to the multitudes going out to see him, do those things that will show that you have turned from your sins. Produce fruit in keeping with repentance.
The gospel of Chris must drive us to do things which otherwise we wouldn't have done; must drive us into places that otherwise we wouldn't have ventured, and must move us to talk, and help others that otherwise we wouldn't have thought off. Should Christ come now, will He find the desired fruit? The gardener is pleading on our behalf for a second chance. God is prepared to give us a second opportunity for repentance. Would you take it?