When I was in High School, I took an electronics class. The teacher was always determined for us to learn how to do our work, not just know about it. On quizzes and tests, he would tell us if we want the answers, he would tell us, but he said that we would be graded on how we found the answer, ugh.
As people today we are faced with challenges in living for God. Others are always willing to give us the answers. We are probably guilty of doing that ourselves. Jesus wanted people, all people, to come to salvation and living the Christ like life; but He wanted us to know and understand how to do it. This passage serves as a lesson learned if we pay attention.