SECOND ARTICLE [I, Q. 30, Art. 2]

Whether There Are More Than Three Persons in God?

Objection 1: It would seem that there are more than three persons in

God. For the plurality of persons in God arises from the plurality of

the relative properties as stated above (A. 1). But there are four

relations in God as stated above (Q. 28, A. 4), paternity, filiation,

common spiration, and procession. Therefore there are four persons in

God.

Obj. 2: The nature of God does not differ from His will more than

from His intellect. But in God, one person proceeds from the will, as

love; and another proceeds from His nature, as Son. Therefore another

proceeds from His intellect, as Word, besides the one Who proceeds

from His nature, as Son; thus again it follows that there are not

only three persons in God.

Obj. 3: Further, the more perfect a creature is, the more interior

operations it has; as a man has understanding and will beyond other

animals. But God infinitely excels every creature. Therefore in God

not only is there a person proceeding from the will, and another from

the intellect, but also in an infinite number of ways. Therefore

there are an infinite number of persons in God.

Obj. 4: Further, it is from the infinite goodness of the Father that

He communicates Himself infinitely in the production of a divine

person. But also in the Holy Ghost is infinite goodness. Therefore

the Holy Ghost produces a divine person; and that person another; and

so to infinity.

Obj. 5: Further, everything within a determinate number is measured,

for number is a measure. But the divine persons are immense, as we

say in the Creed of Athanasius: "The Father is immense, the Son is

immense, the Holy Ghost is immense." Therefore the persons are not

contained within the number three.

_On the contrary,_ It is said: "There are three who bear witness in

heaven, the Father, the Word, and the Holy Ghost" (1 John 5:7). To

those who ask, "Three what?" we answer, with Augustine (De Trin. vii,

4), "Three persons." Therefore there are but three persons in God.

_I answer that,_ As was explained above, there can be only three

persons in God. For it was shown above that the several persons are

the several subsisting relations really distinct from each other. But

a real distinction between the divine relations can come only from

relative opposition. Therefore two opposite relations must needs

refer to two persons: and if any relations are not opposite they must

needs belong to the same person. Since then paternity and filiation

are opposite relations, they belong necessarily to two persons.

Therefore the subsisting paternity is the person of the Father; and

the subsisting filiation is the person of the Son. The other two

relations are not opposed to each other; therefore these two cannot

belong to one person: hence either one of them must belong to both of

the aforesaid persons; or one must belong to one person, and the

other to the other. Now, procession cannot belong to the Father and

the Son, or to either of them; for thus it would follows that the

procession of the intellect, which in God is generation, wherefrom

paternity and filiation are derived, would issue from the procession

of love, whence spiration and procession are derived, if the person

generating and the person generated proceeded from the person

spirating; and this is against what was laid down above (Q. 27, AA.

3, 4). We must consequently admit that spiration belongs to the

person of the Father, and to the person of the Son, forasmuch as it

has no relative opposition either to paternity or to filiation; and

consequently that procession belongs to the other person who is

called the person of the Holy Ghost, who proceeds by way of love, as

above explained. Therefore only three persons exist in God, the

Father, the Son, and the Holy Ghost.

Reply Obj. 1: Although there are four relations in God, one of them,

spiration, is not separated from the person of the Father and of the

Son, but belongs to both; thus, although it is a relation, it is not

called a property, because it does not belong to only one person; nor

is it a personal relation--i.e. constituting a person. The three

relations--paternity, filiation, and procession--are called personal

properties, constituting as it were the persons; for paternity is the

person of the Father, filiation is the person of the Son, procession

is the person of the Holy Ghost proceeding.

Reply Obj. 2: That which proceeds by way of intelligence, as word,

proceeds according to similitude, as also that which proceeds by way

of nature; thus, as above explained (Q. 27, A. 3), the procession of

the divine Word is the very same as generation by way of nature. But

love, as such, does not proceed as the similitude of that whence it

proceeds; although in God love is co-essential as being divine; and

therefore the procession of love is not called generation in God.

Reply Obj. 3: As man is more perfect than other animals, he has more

intrinsic operations than other animals, because his perfection is

something composite. Hence the angels, who are more perfect and more

simple, have fewer intrinsic operations than man, for they have no

imagination, or feeling, or the like. In God there exists only one

real operation--that is, His essence. How there are in Him two

processions was above explained (Q. 27, AA. 1, 4).

Reply Obj. 4: This argument would prove if the Holy Ghost possessed

another goodness apart from the goodness of the Father; for then if

the Father produced a divine person by His goodness, the Holy Ghost

also would do so. But the Father and the Holy Ghost have one and the

same goodness. Nor is there any distinction between them except by

the personal relations. So goodness belongs to the Holy Ghost, as

derived from another; and it belongs to the Father, as the principle

of its communication to another. The opposition of relation does not

allow the relation of the Holy Ghost to be joined with the relation

of principle of another divine person; because He Himself proceeds

from the other persons who are in God.

Reply Obj. 5: A determinate number, if taken as a simple number,

existing in the mind only, is measured by one. But when we speak of a

number of things as applied to the persons in God, the notion of

measure has no place, because the magnitude of the three persons is

the same (Q. 42, AA. 1, 4), and the same is not measured by the same.

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