Physician heal thyself

A biblical proverb meaning that people should take care of their own defects and not just correct the faults of others. According to the Gospels of Luke and Matthew, Jesus said he expected to hear this proverb from the people of his hometown of Nazareth, because they would want him to work miracles there, as he had in other towns nearby. But he “did not do many mighty works there, because of their unbelief.”