The Pharisees continue their attacks against Jesus, but this time it's veiled as a sincere request for Him to show a sign proving Himself to be the Messiah. Jesus' response is once again a stinging rebuke to these hypocritical leaders while at the same time a challenge for all of us to consider if we're more like the Pharisees than we care to admit. This passage also happens to be a great summary of the message of the Gospel according to Matthew.