New North London Synagogue member Paul Harris recalled this week an occasion when he was on duty as a court solicitor and a man in Orthodox dress appeared.
"I've been charged with drink-driving," said the man. "But it wasn't my fault. It was a religious festival."
"That wouldn't be Purim," asked the lawyer. "Baruch Hashem!" said the man. "The Almighty has sent a Jew to save me."
Learning that Mr Harris was not just Jewish but a Cohen, too, he had an unusual request for his lawyer at the trial – to recite the priestly blessing over him.
"While other colleagues took last-minute instructions, I asked God to shine His heavenly light upon my client," Mr Harris recalled.
And heaven duly shone. The client - who had been dressed as a pirate when stopped by police - seemed to stand little chance. But when a policeman brandished in court the label that was attached to his over-the-limit blood sample, crucially, Paul Harris's client's name was missing from it. Case dismissed.
"On simchahs!" the innocent Purim drinker and would-be pirate wished his priestly defender on leaving court.