Jesus himself, at the hour of his Passion, prayed that they may all be one (Jn 17:21). This unity, which the Lord has bestowed on his Church and in which he wishes to embrace all people, is not something added on, but stands at the very heart of Christ’s mission. Nor is it some secondary attribute of the community of his disciples. Rather, it belongs to the very essence of this community. God wills the Church, because he wills unity, and unity is an expression of the whole depth of his agape.
Read Full Document: Pope John Paul II 25 May 1995 That They May Be One