2 Like Our immediate predecessors, We seem to have received a special task from God in His providence to work patiently and constantly to preserve and strengthen peace. This task, as is evident, arises from the fact that We have been entrusted with the governing of the whole Church, which, as a "sign lifted up to the nations,'' (1) does not serve political ends but rather must bring the truth and grace of Jesus Christ, its divine Founder, to mankind.
Source: Christi Matri (Vatican.va)