A thorough and exhaustive survey of all the Biblical verses which explicitly or implicitly conveys Paul's theme of union with Christ within his epistles. Campbell starts with brief discussions of how major Biblical scholars, like Deismann to Barth to Gorman, view union with Christ, defines certain theological concepts like mysticism, sacramentalism, deification, and the "body of Christ," to finally engage the everyplace in Paul's writings where he refers to or suggests union with Christ explicitly or implicitly, e.g. "in Christ," "through Christ," "by Him" (i.e. "by Christ"); he even discusses those texts where Paul metaphorically refers to union with Christ as believers being, for example, the "body," "temple," and "building" of Christ.

Campbell then pursues a theological study, that is, the significance of union with Christ as it relates to the work of Christ, the Trinity, Christian ethics, justification, and defines it as participation with, identification, and incorporation into Christ. He even considers union with Christ in relation to eschatology. Campbell closes his exhaustive study making suggestions and directions for future study and research discussing the importance and structure of Paul's theology as it relates to union with Christ.

This is a necessary read for anyone considering a serious study on the topic of union with Christ in the thought of Paul the apostle. Since Campbell, apparently, minutely goes through every verse in Paul's writings on the issue, I contend it should be the first book before any other books relating to a study of union with Christ. ( )