Jesus spoke in parables to the crowds of people to cover up the truth for those who were not ready for the Kingdom's truth. Jesus gave the truths/keys of the Kingdom to His disciples. Only those who are truth seekers where given the truths/keys of the Kingdom. There where only a handful of people who were Jesus’s disciples and even today there are only a few who are truth seekers. If you are reading this, then you are a truth seeker and the Kingdom has been unlocked for you.
