Wartime lifestyle (Part 3)

In his book Don’t Waste Your Life, John Piper says in part about his use of “wartime lifestyle:”

It is more helpful to think of a wartime lifestyle than a merely simple lifestyle. Simplicity may have a romantic ring and a certain aesthetic appeal that is foreign to the dirty business of mercy in the dangerous places of the world. Simplicity may also overlook the fact that, in wartime, major expenses for complex weapons and troop training are needed. These may not look simple, and may be very expensive, but the whole country sacrifices to make them happen. Simplicity may be inwardly directed and may benefit no one else. A wartime lifestyle implies that there is a great and worthy cause for which to spend and be spent (2 Corinthians 12:15).