In a nine-page contribution submitted to the Anglican Church of Canada’s commission on the marriage canon earlier today, the Anglican-Roman Catholic Dialogue of Canada (ARC) warns that changing Canon 21 to allow for same-sex marriages would “weaken the very basis of our existing communion, and weaken the foundations upon which we have sought to build towards fuller ecclesial communion.”

The contribution, produced at the request of the Anglican church, acknowledges that while great changes have taken place in the broader cultural understanding of marriage in North America in recent years, “Roman Catholics are left to wonder what has changed, such that our previous common understanding of marriage is left in doubt.”

The commission on the marriage canon, established by Council of General Synod in the fall of 2013, was created in response to a resolution approved at General Synod earlier that year to bring a motion concerning same-sex marriage to its next meeting in 2016. The commission’s mandate is to carry out a “broad consultation” within the church in preparation for the motion, and part of this consultation has involved seeking opinions from ecumenical partners such as the Roman Catholic Church.