In Christ: the significance of the phrase In Christ in the writings of St. Paul," by John B. Nielson (1960, Beacon Hill Press), is a specialized study of an expression frequently used in the apostles writings. This book was written to contribute to a "greater appreciation of what it meant for Paul to experience Christ, and of the implications of that encounter for all mankind." The author explores the significance, source, occurrences, and meaning of the phrase, as well as its purpose as an expression of Christian union, and as a means of reinforcing the Pauline themes of justification and reconciliation.