Corrie and the Jar

After Corrie ten Boom and her sister were imprisoned she managed to get a small bottle of liquid vitamins.  She describes what happened when the vitamins would not run out:
It scarcely seemed possible, so small a bottle, so many doses a day.  Now, in addition to Betsie, a dozen others on our pier were taking it.
My instinct was always to hoard it - Betsie was growing so very weak!  But the others were ill as well.  It was hard to say no to eyes that burned with fever, hands that shook with the chill.  I tried to save it for the very weakest - but even these soon numbered fifteen, twenty, twenty-five ...
And still, every time I tilted the little bottle, a drop appeared at the tip of the glass stopper.  It just couldn't be!  I held it up to the light, trying to see how much was left, but the dark brown glass was to thick to see through.
"There was a woman in the Bible," Betsie said, "whose oil jar was never empty."  She turned to it in the Book of Kings, the story of the poor widow of Zarephath who gave Elijah a room in her home: "The jar of meal wasted not, neither did the cruse of oil fail, according to the word of Jehovah which he spoke by Elijah."
Well - but - wonderful things happened all through the Bible.  It was one thing to believe that such things were possible thousands of years ago, another to have it happen now, to us, this very day.  And yet it happened this day, and the next, and the next, until an awed little group of spectators stood around watching the drops fall onto the daily rations of bread.
That vitamin jar did not run out until the day someone smuggled them several huge jars of vitamins.  That night the jar was empty.  They didn't need it any longer.