People always care about what is important to them; but in other matters they are either indifferent, care-less or exploitative.  Although Jesus used parables, many of which may have seemed to have a general moral meaning, the disciples had started to realise that Jesus was speaking to them (Luke 12:41).  Jesus would be going away (John 14:28) but would return for those who were expectantly waiting for Him (Hebrews 9:28).  The task of the disciples, in their calling to be Jesus’ apostles, was to prepare His church to be ready for His return.  

Some sentimental people think that God's job is to be nice to everybody, so that they can enjoy His blessings and get His help when they want it, ignoring Him when they are managing fine (Mark 7:6).  However, that is no way to relate with the God revealed in the Bible, whose character and nature is seen in Jesus Christ (Hebrews 1:1-4)!  God is loving and kind and caring and compassionate (Psalm 116:5); but He is also true and just and righteous (Psalm 145:17) and hates evil (Proverbs 6:16-19).  All those who seek His Kingdom will love Him, but others will resist His Kingly demands and hate

There is a time for every decision: miss it and the opportunity has gone.  Jesus was telling the religious leaders that they could not tell the signs of the (spiritual) times (Luke 12:54-56).  Although they were good at forecasting the weather, they could not recognise the Light of the World even when He was standing in front of them!  Then Jesus changed the metaphor: the little story focuses on two men - one has done wrong against the other.

We are often in too much of a hurry.  We plant and then immediately want the fruit.  But trees need time to develop in strength.  The background to this parable is in Leviticus 19:23-25, which says, "‘When you enter the land and plant any kind of fruit tree, regard its fruit as forbidden. For three years you are to consider it forbidden; it must not be eaten. In the fourth year all its fruit will be holy, an offering of praise to the Lord. But in the fifth year you may eat its fruit. In this way your harvest will be increased.