38 This peace of Christ, however, surpasses all human understanding - "the peace of God which surpasseth all understanding" ( Philippians iv, 7), and for this very reason dominates our sinful passions and renders such evils as division, strife, and discord, which result solely from the unrestrained desire for earthly possessions, impossible. If the desire for worldly possessions were kept within bounds and the place of honor in our affections given to the things of the spirit, which place undoubtedly they deserve, the peace of Christ would follow immediately, to which would be joined in a natural and happy union, as it were, a higher regard for the value and dignity of human life. Human personality, too, would be raised to a higher level, for man has been ennobled by the Blood of Christ and made kin to God Himself by means of holiness and the bond of brotherly love which unites us closely with Christ, by prayer and by the reception of the Sacraments, means infallibly certain to produce this elevation to and participation in the life of God, by the desire to attain everlasting possession of the glory and happiness of heaven which is held out to all by God as our goal and final reward.
Source: Ubi Arcano Dei Consilio (Vatican.va)