The old formalisms of the law have become transformed into the new law.
1 However, since the spiritual remedies of salvation (as was said) have been given to men under sensible signs, it was suitable also to distinguish the remedies provided for the spiritual life after the likeness of bodily life.
2 Now, in bodily life we find a twofold order: for some propagate and order the bodily life in others; and some are propagated and ordered in the bodily life.
3 Now, in a bodily and natural life three things are necessary of themselves, and a fourth incidentally. For first, by generation or birth a thing must receive life; second, by growth it must arrive at its due size and strength; third, both for the preservation of life acquired by generation and for growth nourishment is necessary.
And these are of themselves necessities for natural life, because without these bodily life cannot be perfected; wherefore, one assigns to the vegetative soul which is the principle of life the three natural powers: that of generation, that of growth, and that of nourishment.
But, since there can be an impediment to natural life from which the living thing grows weak, a fourth thing is incidentally necessary; this is the healing of the sick living thing.
4 Thus, then, in the spiritual life, also, the first thing is spiritual generation: by baptism; the second is spiritual growth leading to perfect strength: by the sacrament of confirmation; the third is spiritual nourishment: by the sacrament of the Eucharist.
A fourth remains, which is the spiritual healing; it takes place either in the soul alone through the sacrament of penance; or from the soul flows to the body when this is timely, through extreme unction. These, therefore, bear on those who are propagated and preserved in the spiritual life.
5 Now, those who propagate and order in the bodily life are marked by two things: namely, natural origin, and this refers to parents; and the political regime by which the peaceful life of man is conserved, and this refers to kings and princes.
Notes Kings and princes, you will note.
6 It is, then, also like this in the spiritual life. For some propagate and conserve the spiritual life in a spiritual ministry duly, and this belongs to the sacrament of orders; and some belong to the bodily and spiritual life simultaneously, which takes place in the sacrament of matrimony where a man and woman come together to beget offspring and to rear them in divine worship.