This must have been a really awkward moment to watch. Jesus is tearing into the religious leaders for being blind guides, for keeping people out of the very Kingdom they refuse to enter themselves. What Kingdom is that? His Kingdom. While this would have certainly been rough to watch, it's actually a good pairing with what he said back in Matthew 5 in the Sermon on the Mount. The Kingdom Jesus is preaching isn't only for those who know all the rules and get them right. (Although don't go too far... there will probably still be a few Pharisees in the Kingdom!) It is extended to the downtrodden, the left out, the washed-up. It is extended to all of us, but not on our own terms.