Martin Luther was approached by a working man who wanted to know how he could serve God. Luther asked him, "What is your work now?" The man said, "I'm a shoemaker."

Much to the cobbler's surprise, Luther replied, "Then make good shoes and sell them at a fair price."

Luther didn't tell the man to make "Christian shoes." He didn't tell the man to leave his shoe business and become a monk.

As Christians, we can faithfully serve God in a variety of vocations and jobs. And we don't need to justify that work in terms of its "spiritual" value or evangelistic usefulness. We simply pursue our calling with new God-glorifying motives, goals, and standards.