The sinful spirit of the world divides and separates people; the
Spirit of Christ unites people and brings them together. It was the
sinful spirit of the world that caused the people of Babel to become
confused and scattered. The Spirit of Christ, on the other hand,
enabled people to understand those who were different from them.
What would happen if we carried the Spirit of Christ into the sinful
structures of the world? What if we brought the Spirit of Christ
into the dead bones of our broken relationships among races and
sexes and cultures and regions of the world? Wouldn’t those
dead bones rise to life, as in Ezekiel’s prophecy, if we were
able to breathe into them the Spirit of Christ!
Paul wrote to the Romans that “all creation groans and is in
agony.” We long for unity, and so we pray that the Spirit may
“unite the races and nations on earth and disperse the
divisions of word and tongue.” We Christians “have been
given to drink of the one Spirit,” whom the sequence names
“Father of the poor.” When we shall have done away with
the human divisions represented by the poor, then, indeed, the
Spirit shall have renewed the face of the earth, and we shall be
able to say to people, as Jesus did, “Peace be with
you.”
All men are called to be part of this catholic unity of the People of God, a unity which is harbinger of the universal peace it promotes. And there belong to it or are related to it in various ways, the Catholic faithful as well as all who believe in Christ, and indeed the whole of mankind. For all [persons] are called to salvation by the grace of God.
Vatican II, Dogmatic Constitution on the Church,
1964:13