170 The sacred liturgy of these days reechoes the same message: "Our Lord Jesus Christ, after His resurrection stood in the midst of His disciples and said: Peace be upon you, alleluia. The disciples rejoiced when they saw the Lord." (72) It is Christ, therefore, who brought us peace; Christ who bequeathed it to us: "Peace I leave with you: my peace I give unto you: not as the world giveth, do I give unto you." (73)
Source: Pacem in Terris (Vatican.va)