In this article, Dr. John V. Fesko reviews two books that deal with the doctrine of union with Christ and its relation to John Calvin's theology. He gives approval to J. Todd Billings' Calvin, Participation, and the Gift: The Activity of Believers in Union with Christ, while hesitant to afford the same to Mark A. Garcia's Life in Christ: Union with Christ and Twofold Grace in Calvin's Theology.
While acknowledging the scholarship of both volumes, the ahistoricity of Garcia's work lends Fesko to wonder about whether the Gaffin "school of thought" (upon which Garcia's position bases heavily), as pertaining to these issues of the ordo salutis, justification, sanctification, and how they integrate with union with Christ, is something that is destined to replace the orthodox, Reformed understanding of the said concepts. He rightly comments that "Time will tell whether the Gaffin-school reading of Calvin that Garcia has put forth will endure scrutiny. It does appear, however, that Billings's reading of Calvin is a more accurate portrait. Others have arrived at similar conclusions."
Dr. Richard B. Gaffin, Jr. responds in this article.