In one of his meetings, D.L. Moody was explaining to his audience the truth that we cannot bring about spiritual changes in our lives by our own strength. He demonstrated the principal like this: “Tell me,” he said to his audience, “how can I get the air out of the tumbler I have in my hand?” One man said, “Suck it out with a pump.” But Moody replied, “That would create a vacuum and shatter it.” Finally after many suggestions, he picked up a pitcher and quietly filled the glass with water. “There,” he said, “all the air is now removed.” He then explained that victory for the child of God does not come by working hard to eliminate sinful habits, but rather by allowing Christ to take full possession. (Today in the Word, September, 1991, p. 30).