The way to unity between the Christian churches is another priority for Jesuits.

This was already the case at the very beginning of the Society of Jesus. Pierre Favre (Peter Faber), one of the first companions of St. Ignatius was sent several times to Germany to meet the Reformers, a mission he held close to heart. Pope Francis canonized Peter Faber on December 2013.

Nowadays, one of the common works of the Jesuits in Brussels is devoted to ecumenism and interreligious dialogue. The Chapelle de la Résurrection/Chapel for Europe serves in fact as a meeting and prayer place for Christians of different denominations.

Moreover, the Society contributes through academic research and teaching (e.g. the Pontifical Gregorian University and the Pontifical Oriental Institute in Rome), as well as through local actions.

The European Jesuit ecumenists meet biennially for a weekly session dedicated to studying and sharing on a chosen theme.