Jesus preaches using parables, that is, living examples, images taken from ordinary life, giving them rich and comprehensive content. After a year of traveling the roads of Palestine, preaching the Gospel of the Kingdom and confirming its doctrine with innumerable miracles. Many believe, others do not. Jesus speaks of the Kingdom of God with tact and uses parables in which, without hiding that he is saying new things, he incites the listeners to be interested and warns them: "Who has ears to hear, let him hear". Those with a heart ready for conversion to God will understand the rejection of sin, also in its most subtle forms.