Throughout the Gospel of Luke, we see Jesus interacting with individuals, His small group of disciples, religious leaders, and huge crowds that followed Him. As He walked the earth in human form, He experienced life here on earth and it was from this experience that He was such an effective teacher. Many of Jesus’s teachings were in the form of parables, stories intended to teach a great truth. These stories were relatable to one’s own life and they were parables that could be easily remembered.
Jesus taught not simply to pass on information. As He “did life” with people, especially His disciples, His goal was to teach and equip His hearers so that they in turn would be able to teach and equip others to do likewise. This process is what we call “disciple-making.” It’s the instruction that Jesus gave to His disciples after His Resurrection and soon to be realized ascension back to Heaven.
“Parables are told so that only those who really care will come to know the truth. Not so much because they understand the parable, but because they care enough to ask what it means after the story is finished and hang around long enough to have it explained to them. The others don’t really care and leave. Remember, the disciples didn’t understand the parables, but they asked what Jesus meant after the crowds left. They had a soft and open heart. Understanding is an issue of the heart. Those who have a hard heart, also have closed eyes and closed ears and they don’t understand.” (Introduction to the Parables/Bible.org)