It's heartbreakingly sad to hear Jesus rebuke here. He's talking about people who were meant to lead people closer to God, and yet they couldn't open their hearts enough to be converted and fall in love with Christ. Not only did they miss the point themselves, but they then hindered others in coming to Christ.
The Pharisees and others heard these words, but rather than examine themselves, they opted to kill Jesus instead.
Do we have the humility to hear Jesus speak to us, even when it's not words that we want to hear? Are our hearts open to his words, so that we might be convicted, so that we might hear what is so important for us to hear? Jesus loves us and wants us to draw closer, and when our pride gets in the way, it's easy to resist out of fear. None of us like change, but Jesus is calling us to change for a good reason, that we might turn back to Christ.