FIRST ARTICLE: WHETHER IT IS FITTING THAT GOD SHOULD ADOPT SONS

State of the question. It seems that it is not fitting, because only strangers are adopted, and nobody is a stranger to God.

Reply. Yet the answer is in the affirmative, for the Apostle says: "Who hath predestinated us unto the adoption of children."[1588]

Theological proof. To adopt is to admit someone to share in another's inheritance. Thus a rich man adopts a poor man's son. But it is fitting that God of His infinite goodness admit His intellectual creatures to share in His inheritance, which is the enjoyment of Himself. For God is rich and happy in Himself, that is to say, in the enjoyment of Himself. Therefore it is indeed fitting for God to adopt sons.

It must be noted that reason alone cannot apodictically prove the possibility of this adoption; for this would be to prove the possibility of grace, which is essentially supernatural in that it is a participation of the divine nature of God's intimate life which therefore transcends the scope of truths that can be proved by reason alone.

But posited the revelation of this truth, God's infinite goodness makes it clear that it befits Him to adopt. Its possibility can neither be proved nor disproved, but we are persuaded of it and it is firmly held by faith alone.

First doubt. What is the difference between divine adoption and human adoption?[1589]

Reply. The difference is that a man in adopting someone, for example, a poor man's son, does not make this son worthy to inherit from him, but in adopting such a person presupposes as worthy him whom he chooses. On the contrary, God makes the man whom He adopts worthy by the gift of His grace to receive the heavenly inheritance. Hence divine adoption is far superior to human adoption and much more real; for it elevates one to the higher order of the divine life and proceeds from uncreated love which is effective and productive of grace. It regenerates the soul so that the adoptive son is said to be "born... of God,"[1590] not indeed by nature as the only-begotten Son, but by grace, that is, regenerated spiritually by infused grace.

Second doubt. What is the difference between adoptive sonship and natural sonship?

Natural sonship is the relation that befits anyone inasmuch as by virtue of birth such a person receives from the generator either the numerically identical nature as in the case of the divine person or specifically the same nature as in created beings. Hence taken in the strict sense it is defined as "the origin of a living being from a living principle in the likeness of nature."[1591] Thus the foundation of natural sonship is passive generation.

Adoptive sonship is a qualified imitation of natural sonship inasmuch as the adopted does not receive the adopter's nature, but a right to the inheritance as if he were the true son. Hence adoption among jurists and theologians is generally defined as being the gratuitous and free assumption of a stranger to the inheritance of the adopter.

The solution of the objections of this article confirms the reply.

Reply to first objection. "Considered in his nature, man is not a stranger in respect to God as to the natural gifts bestowed on him; but he is as to the gifts of grace and glory, " because he has these not by nature, but only by adoption.

Reply to second objection. Adoptive sonship is a participation in the resemblance of divine natural sonship, hence the Apostle says: "He predestinated us to be made conformable to the image of His Son."[1592] In other words, just as the only-begotten Son received from all eternity the whole divine nature from His Father, so the adoptive son receives in time a participation of the divine nature.

Reply to third objection. "Spiritual goods can be possessed by many at the same time, not so material goods. Wherefore none can receive a material inheritance except the successor of a deceased being; whereas all receive the spiritual inheritance at the same time in its entirety without detriment to the ever-living Father."