Luke 13

The Jews had a viewpoint that many today might often hold to as well - that good things happened to good people (like them, the Chosen); and bad things happened to bad or sinful people.  But, Jesus pointed them to the truth that all men are sinners and need to repent or will perish.  The parable He told clearly showed that those who do not bear fruit will be "cut down".  Repentance is a fruit, along with the fruits of the Spirit, harvesting when seeds are sown, etc.

 When Jesus healed a woman who was crippled for eighteen years, she praised God; but, the synagogue leader was indignant that He healed on the Sabbath.  It is important to not let legalism or self-righteousness get in the way of seeing God at work.    Jesus showed His compassion for the people, that when He seemed to have their attention after the miracle, He went back to His purpose of proclaiming the good news of the kingdom of God.   The parables He told showed the kingdom as starting as a small seed and growing large; and also as yeast permeating the whole dough.   Jesus used what is sometimes negative references (e.g. yeast) in a positive way.

Jesus also encouraged them to "Make every effort to enter through the narrow door, because many, ...will try to enter and will not be able to".  Even when He heard that Herod was trying to kill Him, He continued doing His Work and pressing on toward Jerusalem, the Cross.   He lamented for Jerusalem; but, offered hope for when He Returns.