The young ladies were taking their final vows to become nuns at the Mass. The presiding bishop noticed two rabbis seated at the back of the sanctuary. They'd insisted on sitting on the right side of the center aisle.
The bishop was curious why they'd come, but didn't have time to ask. He went ahead and started the ceremony. Later, when it was time for announcements, the bishop went back to
where the rabbis sat.
"I'm delighted to see you both here and thank you for coming. But I'm a little curious as to why you're present on this occasion where these young women are becoming 'Brides of Christ'."
The more senior of the rabbis smiled, rose to his feet, and explained, "We're 'Family of the Groom'."