Luke 6:43-49
Chapter 6
Each tree is recognized by its fruit: you can’t gather figs from thorn bushes or grapes from brambles.
Similarly, a good person brings forth good things from the good stored in his heart, while an evil person brings forth evil things from the evil stored in his heart, for the mouth speaks from what fills the heart.
I will show you what the one is like who comes to me, listens to my words, and acts on them.
That person is like a builder who digs deep and lays the foundation of his house on the rock. When the river overflows and the stream crashes against the house, it cannot be carried off because the house is well built.
But the one who listens and does not act is like a man who built his house on the ground without a foundation. The flood burst against it and the house fell at once, and what a terrible disaster that was!”

Commentaries
The Blind Leading the Blind – The Tree and its Fruit – Rock and Sand.
The disciple is called to live a life devoted to the Master’s goal. Jesus indicates that, in following him, mediocrity and lack of self-criticism are the main barriers to experiencing the kingdom. It is very easy to declare Jesus as ‘Lord, Lord,’ but without any commitment, not even the slightest awareness of his demands (49). Faith, renunciation, and commitment are three attitudes that the disciple must demonstrate.