THIRD ARTICLE [III, Q. 15, Art. 3]

Whether in Christ There Was Ignorance?

Objection 1: It would seem that there was ignorance in Christ. For

that is truly in Christ which belongs to Him in His human nature,

although it does not belong to Him in His Divine Nature, as suffering

and death. But ignorance belongs to Christ in His human nature; for

Damascene says (De Fide Orth. iii, 21) that "He assumed an ignorant

and enslaved nature." Therefore ignorance was truly in Christ.

Obj. 2: Further, one is said to be ignorant through defect of

knowledge. Now some kind of knowledge was wanting to Christ, for the

Apostle says (2 Cor. 5:21) "Him that knew no sin, for us He hath made

sin." Therefore there was ignorance in Christ.

Obj. 3: Further, it is written (Isa. 8:4): "For before the child know

to call his Father and his mother, the strength of Damascus . . .

shall be taken away." Therefore in Christ there was ignorance of

certain things.

_On the contrary,_ Ignorance is not taken away by ignorance. But

Christ came to take away our ignorance; for "He came to enlighten

them that sit in darkness and in the shadow of death" (Luke 1:79).

Therefore there was no ignorance in Christ.

_I answer that,_ As there was the fulness of grace and virtue in

Christ, so too there was the fulness of all knowledge, as is plain

from what has been said above (Q. 7, A. 9; Q. 9). Now as the fulness

of grace and virtue in Christ excluded the _fomes_ of sin, so the

fulness of knowledge excluded ignorance, which is opposed to

knowledge. Hence, even as the _fomes_ of sin was not in Christ,

neither was there ignorance in Him.

Reply Obj. 1: The nature assumed by Christ may be viewed in two ways.

First, in its specific nature, and thus Damascene calls it "ignorant

and enslaved"; hence he adds: "For man's nature is a slave of Him"

(i.e. God) "Who made it; and it has no knowledge of future things."

Secondly, it may be considered with regard to what it has from its

union with the Divine hypostasis, from which it has the fulness of

knowledge and grace, according to John 1:14: "We saw Him [Vulg.: 'His

glory'] as it were the Only-begotten of the Father, full of grace and

truth"; and in this way the human nature in Christ was not affected

with ignorance.

Reply Obj. 2: Christ is said not to have known sin, because He did

not know it by experience; but He knew it by simple cognition.

Reply Obj. 3: The prophet is speaking in this passage of the human

knowledge of Christ; thus he says: "Before the Child" (i.e. in His

human nature) "know to call His father" (i.e. Joseph, who was His

reputed father), "and His mother" (i.e. Mary), "the strength of

Damascus . . . shall be taken away." Nor are we to understand this as

if He had been some time a man without knowing it; but "before He

know" (i.e. before He is a man having human knowledge)--literally,

"the strength of Damascus and the spoils of Samaria shall be taken

away by the King of the Assyrians"--or spiritually, "before His birth

He will save His people solely by invocation," as a gloss expounds

it. Augustine however (Serm. xxxii de Temp.) says that this was

fulfilled in the adoration of the Magi. For he says: "Before He

uttered human words in human flesh, He received the strength of

Damascus, i.e. the riches which Damascus vaunted (for in riches the

first place is given to gold). They themselves were the spoils of

Samaria. Because Samaria is taken to signify idolatry; since this

people, having turned away from the Lord, turned to the worship of

idols. Hence these were the first spoils which the child took from

the domination of idolatry." And in this way "before the child know"

may be taken to mean "before he show himself to know."

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Summa Theologica, Part III (Tertia Pars) From the Complete American Edition · 第 115 / 654 题