‘Three Subsistences … One Substance’: the Doctrine of the Trinity in the Second London Confession

Abstract This article examines the doctrine of the Trinity taught in the Second London Confession of Faith of 1677. It begins by examining a trinitarian controversy among the Particular Baptists of England in the mid-seventeenth century. After outlining the doctrinal deviations of Thomas Collier, the article proceeds to describe some of the responses to Collier from the Particular Baptist community. In many ways the Second London Confession can be seen as a response to Collier. The article also explores the theology of Hercules Collins, a signatory of the Second London Confession, in contrast to the doctrinal deviations of Collier. The article shows that the Particular Baptists continued in the orthodox Christian tradition of the Apostles, Nicene, and Chalcedonian Creeds. They adopted the Reformed confessional language of the Westminster Confession of 1646 and the Savoy Declaration of 1658 while at the same time not fearing to adjust the language in accordance with their orthodox commitments.