Disputations on Our Necessary Secession from the Church of Rome

Published at Geneva in 1687, De necessaria secessione nostra ab Ecclesia Romana, et impossibili cum ea syncretismo, disputationes is Francis Turretin's sustained argument that the Reformed churches were right to leave Rome and cannot now be reconciled with her. Turretin, pastor and professor of theology at Geneva, wrote it in a decade when the Reformed position in Europe looked fragile. Louis XIV's France was tightening the screws on its Huguenots, and the revocation of the Edict of Nantes followed in 1685. At the same time, irenic proposals for reunion kept circulating, and Reformed Christians were being pressed, from without and sometimes from within, to ask whether the Reformation break had been necessary at all.

Turretin answers in the form of academic disputations, the scholastic method he used throughout his teaching. He first sets out the question precisely: what the separation consisted of, who bore responsibility for it, and what would count as grounds for leaving a church. His central claim is that the Reformers did not abandon the church but refused corruptions that Rome had made binding. Where a church imposes on the conscience doctrines and practices that Scripture does not warrant, and refuses correction, separation becomes a duty rather than a choice. He then presses the second half of his title: syncretism, the project of merging the two communions by compromise, is impossible because the disagreements concern fundamentals of salvation, authority, worship, and the church itself, and cannot be split down the middle. Truth that matters is not a thing one can half give up.

The treatise belongs to the same labor that produced Turretin's Institutio theologiae elencticae, the Reformed scholastic system that became a standard Protestant dogmatics. Here that precision is turned to the question of ecclesial division. It remains a clear statement of how classical Reformed theology reasons about schism, the marks of a true church, and the limits of ecumenical accommodation. For anyone trying to understand why the Reformed tradition thought separation was warranted rather than merely regrettable, it is the primary source, and it is more disciplined and less polemical in temper than much confessional writing of its era.

Who should read this: students of Reformed theology, church historians, and Protestants who want the underlying argument for their communion's origins in the form its own theologians gave it. It will serve readers comfortable with scholastic structure and sustained reasoning. It is not for those seeking a devotional work or a modern ecumenical conversation partner, and Roman Catholic readers should expect a position stated firmly, from within the controversy, with no attempt at neutrality.