"The church’s task primarily is to evangelize, and to bring people to a knowledge of God. Then, having done that, she is to teach them how to live their life under God as His people. The church is not here to reform the world, for the world cannot be reformed. The business of the church is to evangelize, to preach the Gospel of salvation to men who are blinded by sin and under the domination and the power of the devil. The moment the church begins to enter into the details of politics and economics, she is doing something that militates against her primary task of evangelism."
~ Martyn Lloyd-Jones, Life in the Spirit in Marriage, Home and Work: An Exposition of Ephesians 5:18 to 6:9 (Edinburgh: Banner of Truth, 1973), pp. 318–19.