How do we know that Jesus spoke in parables for a reason?

In Mark 4:11-12, Jesus explains to His disciples that it was given to them to know the mystery of the Kingdom of God, while to others it was presented in parables so that they might hear but not understand. This approach highlights a divinely orchestrated aspect of His ministry, fulfilling Old Testament prophecies that indicated some would be spiritually blind. Thus, parables serve as both a revelation and a judgment, illustrating the mystery of faith where God determines who receives understanding.