Every morning, a woman stood on her porch and shouted "Praise the Lord!"
Every morning, the atheist in the house across from her shouted back, "There is no Lord!"
One day, when the woman is out on her porch she says, "Dear God, I'm hungry. Please send me groceries."
The next day, when she goes out to her porch, she sees a huge bag of groceries on her doorstep. "Praise the Lord!" she shouts.
"Aha!" says the neighbour, stepping out from the bushes. "This is proof that there's no God: I brought those groceries myself."
"Praise the Lord!" says the woman again. "Not only did the Lord send the groceries, he made the devil pay for them."