Which Vocations Should Be Off Limits to Christians?

The Reformation doctrine of vocation teaches that even seemingly secular jobs and earthly relationships are spheres where God assigns Christians to live out their faith. But are there some lines of work that Christians should avoid?

The early church required new members to give up their occupations as gladiators or actors. Whether Christians should enter military service has been controversial at several points in church history. So has holding political or judicial offices. Recently, New York Times columnist David Brooks suggested that Christians should not become professional athletes. He observed that "the moral ethos of sport"---which centers on pride---"is in tension with the moral ethos of faith," which requires humility.
So what guidance can we find from the doctrine of vocation? There is more to that teaching than most people realize, so let's review some of its more salient points. (To study this in more depth, you can check out my book God at Work: Your Christian Vocation in All of Life and follow the Bible references and footnotes. Also see my new book Family Vocation: God's Calling in Marriage, Parenting, and Childhood for yet more facets of this critical teaching for how Christians can live out faith in the world and in their everyday relationships.)

God Never Calls Us to Sin

"Vocation" is simply the Latinate word for "calling." The doctrine of vocation means that God assigns us to a certain life---with its particular talents, tasks, responsibilities, and relationships---and then calls us to that assignment (1 Corinthians 7:17). God never calls us to sin. All callings, or vocations, from God are thus valid places to serve. So strictly speaking there are no unlawful vocations; the question should actually be whether or not a particular way of making a living is a vocation at all.
God himself works through human vocations in providential care as he governs the world. He provides daily bread through farmers and bakers. He protects us through lawful magistrates. He heals us by means of physicians, nurses, and pharmacists. He creates new life through mothers and fathers. So we can ask whether or not God extends blessings through a particular line of work.
The purpose of every vocation, in all of the different spheres in which our multiple vocations occur---the family, the workplace, the culture, and the church---is to love and serve our neighbors. Loving God and loving our neighbors sums up our purpose (Matthew 22:36-40). Having been reconciled to God through Christ, we are then sent by God into the world to love and serve him by loving and serving our neighbors. This happens in vocation. So we can ask of every kind of work we doing, "Am I loving and serving my neighbor, or am I exploiting and tempting him?"
Obviously, those who make their living by robbery are not loving their neighbors. Heroin dealers, hit men, con artists, and other criminals are hurting their neighbors and have no calling from God to do so.
But there are some legal professions that also involve harming their neighbors instead of loving and serving them. An abortionist kills his small neighbor in the womb. An internet pornographer is abusing the neighbors he is exploiting sexually and, moreover, causing the neighbors who are his customers to sin.
Read the rest here at The Gospel Coalition