Youngchun Cho investigates the theology of Anthony Tuckney, an overlooked yet highly influential member of the Westminster Assembly. After a brief biography and an evaluation of Tuckney’s use of Scripture and reason, Cho shows how he related union with Christ to the doctrine of the Trinity, soteriology, and assurance of salvation. This book refutes claims that seventeenth-century Reformed theology in general, and the Westminster Standards in particular, pursued logical precision at the expense of the dynamic aspect of union with Christ, demonstrating that union with Christ was a critical element to Tuckney’s theological agenda. Series Description Complementing the primary source material in the Principal Documents of the Westminster Assembly series, the Studies on the Westminster Assembly provides access to classic studies that have not been reprinted and to new studies, providing some of the best existing research on the Assembly and its members.