Numerous ecclesial groups have arisen before and since Vatican II, constituting a great source of renewal for the Church and the new evangelisation. These new, powerfully dynamic realities, recognised by John Paul II as a 'providential answer' to communicating the Gospel in a new way to the whole world, offer a great source of hope. This document reflects on how a fruitful and ordered participation of these 'movements' is achievable in communion with the mission of the Church.