"Several of our brothers have been warning us to be careful about the leaven of The Church Growth Movement and the insidious Reformed doctrine contained within. Not a few of us have heard their warning and have thought to counter the danger by saying we will weed out the erroneous material and use only that which is proper and beneficial to the Lord's work in our congregations. Fellow-shepherds, there is some evidence to show that that is exactly what the devils wants us to think. That seems to be used to lull us and our members into sleep, and without our intending it, the soul-harming false doctrines creep in undetected, under the guise of religious printed materials and programs."
Michigan District President Robert Mueller, (WELS), "President's Report to the Conferences, Spring, 1991, p. 2.