Readings: 1 Corinthians 10.14-22; Psalm 115; Luke 6.43-49
It is a wise criterion, clearly, coming from Christ himself, that it is by their fruits that the character and quality of a tree is known. When discerning about spiritual and religious claims and activities it is one o fht emost practical and useful of the criteria we can use. The only difficulty is that it operates post factum. In other words we have to wait and see how people act in order to judge the significance of their words and the charcter and quality of their hearts.
A lot of damage might have been done in the meantime, while we are waiting to see and discern. It has been so in cases of abuse - until a person's actions become known, abusers can continue to bear bad fruit, poisoning the lives of people, sometimes many other people. Once their actions are known, then they can be addressed and prevented from doing further harm.
Sometimes, though, the reputation of people for holiness or doctrinal orthodoxy, other criteria we might use, confuses situations and prevents people from believing that what they are hearing about their behaviour could possibly be true. Some situations, especially of what is termed 'spiritual abuse', arise where leaders or teachers are considered, either by themselves or by their followers, to be guru like and above the ordinary norms of morality. This can be about sexuality, or authority, or property - the three areas of life with which the vows of religion are concerned.
Jesus changes the imagery from trees bearing fruit to. buildings constructed on rock. This seems reliable from the beginning: if we know that the foundations of a person's spiritual and moral life are true and good, we can be confident that their words will be consistent and their actions trustworthy.
But the risks of living remain and uncertainties will continue to arise. Paul in the first reading is dealing with such an ambiguity in the early Church. If idols are nothing does it matter whether I have anything to do with their 'worship' or not? A contemporary form of the question is this: if I practise yoga exercises am I worshipping a false god? Most people would say 'don't be absurd, of course not'. But some Christians, and perhaps others, get anxious and believe such worship is implicit in the practice of yoga whether you think it is or not.
How are we to respond? If a yoga teacher is behaving immorally with her or his students it is one thing and the situation is clear. If the practice is for physical and mental health what is the problem, even if in some parts of the world yog continues to be used in religious rites?
The challenge from the readings today is to ensure coherence between heart and lips and hands, thoughts and words and actions. The place to begin is clearly with thoughts, that we seek to have the mind of Christ, that we know the treasure on which our heart is fixed, that we build our house on that desire. If we speak and act consistently with that foundation in our hearts and minds then we are, by God's grace, good trees bearing good fruit.