This treatment of the International Sunday School Lesson is written by Sam E. Stone, former editor of CHRISTIAN STANDARD. It is published in the February 15 issue of The Lookout magazine, and is also available online at www.lookoutmag.com. ______ By Sam E. Stone Today we complete this quarter”s survey of practical help for Christian living. Having considered such themes as worship, prayer, and stewardship, we now focus on the reality of the believer”s battle with the devil. William Hendriksen pointed out Paul”s emphasis on the source of power for believers: “Apart from Christ, Christians can accomplish nothing at all (John 15:1-5). They are like