Since Christ is the universal cause of our salvation and of the spiritual life by which we live to God; and since we understand spiritual things by the likeness which they bear to such as are physical; we must distinguish the Sacraments which are instituted for the spiritual life, by comparing them with those things which are ordained for corporeal life.

Now, in physical life, we have: first, generation, whereby life is acquired; secondly, development, whereby the body is perfected; thirdly, nutrition, whereby it is preserved. Thus the vegetative life possesses powers of generation, of growth, and of nutrition. But for the animal nature, as sickness may attack it, nature provides fitting remedies; and as generation cannot occur without a parent, some generating factor must exist in the world.

Corresponding to these needs of the physical life, we have in the spiritual life many Sacraments. Of these the first is Baptism, whereby man is born again in Christ. The second is Confirmation, whereby grace is increased within him, and he is rendered strong enough to endure the trials, through which all must pass on their way to eternal life. The third is the Blessed Eucharist, without which the spiritual life of man would flag, as his body would faint without food. The fourth is the Sacrament of Penance, whereby he recovers spiritual health, and the wounds of his soul are healed. The fifth is Extreme Unction, which heals the soul, and, (since bodily sickness is sometimes caused by sin), in some cases restores health to the body; or, when recovery from sickness is not expedient, it enables the soul to pass, more devoutly and easily, to eternal life. The sixth Sacrament is that of Holy Orders, which provides fathers for the spiritual life. Then, since the spiritual life could not endure, were the human race to be extinct, we have the Sacrament of Matrimony, which is the seventh Sacrament of the Church. Thus we see, that, as in the physical order the propagators of physical life may be regarded, either as the principles of the life of their progeny, or as the rulers and superiors of their children, so in the spiritual order, Christ has ordained seven Sacraments to be the principles and the organisers of the spiritual life.

We see, then, how wisely, and how advisedly, Christ has instituted seven Sacraments in His Church.