The sin of Adam passed on to the whole human race. As St Paul says, Sin entered the world through one man, and through sin death, and thus death has spread through the whole human race. So the righteousness of Christ has to pass on to the whole human race also; and as Adam ruined all his descendants by sin, so must Christ, through righteousness, give life to his entire race. St Paul makes this point, saying As by one man’s disobedience many were made sinners, so by one man’s obedience many will be made righteous. Just as sin reigned and brought death, so grace will reign to bring eternal life through righteousness.
 

Someone might object as follows: “The sin of Adam deservedly passed on his posterity, because they were born of him. And are we then born of Christ, that we can be saved through him?” Stop thinking simply in terms of the body: then you will see in what sense Christ is our parent and we are born of him. In these last days Christ took a soul and body from Mary. It is this flesh that he came to save, that he did not abandon to the underworld: he united it with his own spirit and made it his own. This is the marriage of the Lord, united with the flesh of man, a mystery uniting the two — Christ and the Church — in one flesh.
 

From this marriage and from the coming of the Spirit of the Lord from above, the Christian people is born. The substance of our souls receives the seed of heaven: we are conceived in the womb of our mother and born of that womb we receive life in Christ. So St Paul says, The first man, Adam, as scripture says, “became a living soul;” but the last Adam has become a life-giving spirit. It is through his priests that Christ sows his seed in the Church. St Paul, again, says: It was I who begot you in Christ Jesus. It is the seed of Christ, that is, the Spirit of God, that produces the new man through the priest’s hands, conceived in the womb of his mother and born in the baptismal font under the auspices of faith.
 

We must receive Christ so that he can give us birth, as the Apostle John says: To all who accepted him he gave power to become children of God. But this cannot be brought about except by the sacrament of cleansing and anointing, the sacrament which the bishop administers. Sins are washed away by the cleansing waters of the font; the Holy Spirit is infused by oil of chrism; and we receive both at the bishop’s hands and through his words. Thus the whole man is born again and made new in Christ: so that as Christ was raised from the dead by the glory of the Father, we too might walk in newness of life. That is, having put behind us the errors of our former life, we should through the Spirit follow a new way of life in Christ.On the part of those who come to the vine, their union with him depends upon a deliberate act of the will; on his part, the union is effected by grace. Because we had good will, we made the act of faith that brought us to Christ, and received from him the dignity of adoptive sonship that made us his own kinsmen, according to the words of Saint Paul: He who is joined to the Lord is one spirit with him.