10 Furthermore, the Christian perfection and completeness of marriage are not comprised in those points only which have been mentioned. For, first, there has been vouchsafed to the marriage union a higher and nobler purpose than was ever previously given to it. By the command of Christ, it not only looks to the propagation of the human race, but to the bringing forth of children for the Church, "fellow citizens with the saints, and the domestics of God";(16) so that "a people might be born and brought up for the worship and religion of the true God and our Saviour Jesus Christ."(17)
Source: Arcanum Divinae (Vatican.va)