...the "war" that I have in mind when I speak of a "wartime mind-set" or a "wartime lifestyle" is not being fought along geographical lines. It is being fought first along the line between good and evil in every human heart, especially the hearts of Christians where Christ has staked his claim, and where he means to be totally triumphant. The "war" is being fought along the line between sin and righteousness in every family. It is being fought along the line between truth and falsehood in every school . . . between justice and injustice in every legislature . . . between integrity and corruption in every office . . . between love and hate in every ethnic group . . . between pride and humility in every sport . . . between the beautiful and the ugly in every art . . . between right doctrine and wrong doctrine in every church . . . and between sloth and diligence between coffee breaks. It is not a waste to fight the battle for truth and faith and love on any of these fronts.
John Piper