The Reformed tradition today often carries a reputation for narrowness and dogmatism, rather than breadth and diversity. But it was not always so. In the early modern era, the Reformed family of churches boasted not merely a host of theological luminaries of the highest rank, but a remarkable diversity of viewpoints on church polity, ethics, sacraments, and even matters like atonement theology. At their best, they charitably debated these differences within a shared confessional framework, offering examples for Protestants today of how to pursue the maxim, “in essentials unity, in non-essentials liberty, in all things charity.” The essays in this volume, based on papers presented at the Davenant Trust's 4th Annual Convivium Irenicum, offer an introduction to the theological rigor and surprising breadth of the early Reformed tradition.