Perfect Soundness

In an American locomotive shed there is an instrument, something like a piano, for testing engines. The sound of each part of the engine, when in a perfect state, is in unison with the corresponding note in the testing machine. The slightest flaw in any of the parts will cause a discord, and so reveal its weakness. The Word of God is a perfect testing instrument for man's character and life. If our thoughts and acts are not in harmony with it, it is because there is some defect in us somewhere. The character that is perfectly sound will be in perfect accord with this Divine instrument.