There was a poor young minister whose new wife was extravagant. When she came home one day in an expensive coat, he exclaimed, "You know we can't afford clothes like that!"
"I'm sorry," she said. "The devil made me buy it."
"You should have said 'Satan, get thee behind me!'" the minister admonished.
"I did," his wife replied. "But he called over my shoulder that it fit me beautifully in the back, too."