Jesus was a teacher and He spoke in parables to conceal the mysteries of God so people had to use their volition to take action and THINK!
How boring would life be if you walked into class and the teacher said, “Hello, I’m God. I hid the key to access heaven on earth in this book. Talk to you later.” And then He shuts the door and locks it. So you walk over to His desk to pick up the book and a key falls onto the floor, so you pick it up and go over to see if it unlocks the door and when it does God is standing there facing the door like, “Hello!” So you glance over your shoulder to check your classmates, and they’re all just sitting there looking at God like He’s an idiot.