Most people judge matters according to the principle of good and evil. In the Bible, however, good and evil are introduced not as distinct categories but as parts of the same category. The Bible reveals that instead of being occupied with the concept of good and evil, we should be concerned about life and death. To be in life is to live out God, and to be in death is to live out Satan. In this booklet taken from the Life-study of Romans, Witness Lee presents from Scripture the line of life, the line of death, the universal battle between God as the source of life and Satan as the source of death, and the Christian's place in this battle.