In the book of Luke the Savior taught that if we asked, we would receive. Wilcox expounded on this scripture, noting that all good things come from God, but a misplaced desire that veered from what was needed would turn the given bread into stone. God—Wilcox noted—only gave bread, never stones; only fish, never serpents; only eggs, never scorpions.
To illustrate, he told of the desire he had always had to serve a mission in Denmark. Since his family was of Danish decent, the majority of them served in Denmark—but since he grew up in an area that taught French in high school, he inherently knew that he was destined to serve in France. In fervent prayers, he asked God to send him anywhere but France, even to French Polynesia—just as long as it was not to France.
He was at work when his mission called arrived, and he dreaded the return home. He stalled, lingered at work, and then drove home slowly with high hopes for red lights. In a final act of defiance against what he knew was the inevitable mission call to France, he pulled off to the side of the road near his home and gave a desperate prayer: "Father in Heaven, I know my mission call is at home, and I know it says France. Thou art all powerful; thou art merciful and loving. Please—thou canst do all things—please change it in the envelope."
When he finally opened his call, it said France. "Of course it said France. Actually, I think it originally said Denmark," stated Wilcox.
Post-mission, he found that he had French ancestors and that he had served in some of the cities that they had lived in. He loved his mission and learned that God did not give useless or harmful things—only what was needed.
--S Michael Wilcox, "Bread or Stones:
Understanding the God We Pray To"
(For the full talk, click on the title)