Taking The Guesswork Out of Applying The Bible, J. Kuhatschek, IVP, pp. 153ff
D. L. Moody said, "I believe firmly that the moment our hearts are emptied of pride and selfishness and ambition and everything that is contrary to God's law, the Holy Spirit will fill every corner of our hearts. But if we are full of pride and conceit and ambition and the world, there is no room for the Spirit of God. We must be emptied before we can be filled."