“We had come to take it for granted that good organization and efficient technique, backed by a routine of prayers, was itself sufficient to guarantee results. We felt that there was an almost magical potency in the special meeting, the special choir and soloist, and the special preacher. We felt convinced that the thing that would always bring life into a dead church, or a dead town, was an intensive evangelistic mission. With the top of our minds, many of us still think that, or profess to think it. We tell each other that it is so, and make our plans on this basis. But with the bottom of our minds, in our heart of hearts, we have grown discouraged, and disillusioned, and apprehensive. Once we thought that well-planned evangelism was sure to succeed, but now we find ourselves afraid each time that it is going to fail, as it has failed so often before. Yet we are afraid to admit our fears to ourselves, for we do not know what to make of a situation in which our planned evangelism fails. So we repress our fears, and our disillusionment becomes a paralysing neurosis, and our evangelistic practice becomes a jaded and half-hearted routine. Basically, the trouble is our unconfessed doubts as to the worth whileness of what we are doing.
Why have we these doubts? Because we have been disillusioned. How have we been disillusioned? By the repeated failure of the evangelistic techniques in which we once reposed such confidence. What is the cure of our disillusionment? First, we must admit that we were silly ever to think that any evangelistic technique, however skillful, could of itself guarantee conversions; second, we must recognize that, because man’s heart is impervious to the word of God, it is no cause for surprise if at any time our evangelism fails to result in conversions; third, we must remember that the terms of our calling are that we should be faithful, not that we should be successful; fourth, we must learn to rest all our hopes of fruit in evangelism upon the omnipotent grace of God. For God does what man cannot do. God works by His Spirit through His Word in the hearts of sinful men to bring them to repentance and faith. Faith is a gift of God.”
-J.I. Packer Evangelism and the Sovereignty of God