A little levity - that fits in with the subject matter - maybe

Sister Karen, who worked for a home health agency, was out making rounds visiting homebound patients when she ran out of gas. As luck would have it a gas station was just a block away. She walked to the station to borrow a gas can and buy some gas.
The attendant told her that the only gas can he owned had been loaned out, but she could wait until it was returned.
Since the nun was on her way to see a patient who needed a bedpan badly, she decided to walk back to her car. She looked for something in her car that she could fill with gas and spotted the bedpan she was taking to her patient. Always resourceful, she carried the bedpan to the station, filled it with gas and slowly carried the full pan back to the car.
As she was carefully pouring the gas from the pan into her tank, two men were watching from across the street. One turned to the other and said,
"If it starts, I'm turning Catholic".