A certain thornbush had berries which resembled grapes. And a certain thistle had a flower, which at least from a distance, resembled the fig. False prophets or teachers abound today as much as they did in biblical times. Jesus connects soundness with good fruit. Something is sound when it is free from defect, decay, or disease and is healthy.
Good fruit is the result of sound living living according to moral truth and upright character.
The fruits of falsehood produce an easy religion which takes the iron out of religion, the cross out of Christianity, and any teaching which eliminates the hard sayings of Jesus, and which push the judgments of God into the background and makes us think lightly of sin. By being true true to God, his word, and his grace. Those who are true to God know that their strength lies not in themselves but in God who supplies what we need. The fruit of a disciple is marked by faith, hope and love, justice, prudence, fortitude and temperance. Lord, may I bear good fruit for your sake.