other, he took his dead brother's place.

Reply Obj. 8: The Law permitted a wife to be divorced, not as though
it were just absolutely speaking, but on account of the Jews'
hardness of heart, as Our Lord declared (Matt. 19:8). Of this,
however, we must speak more fully in the treatise on Matrimony
(Supp., Q. 67).

Reply Obj. 9: Wives break their conjugal faith by adultery, both
easily, for motives of pleasure, and hiddenly, since "the eye of the
adulterer observeth darkness" (Job 24:15). But this does not apply to
a son in respect of his father, or to a servant in respect of his
master: because the latter infidelity is not the result of the lust
of pleasure, but rather of malice: nor can it remain hidden like the
infidelity of an adulterous woman.
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QUESTION 106

OF THE LAW OF THE GOSPEL, CALLED THE NEW LAW, CONSIDERED IN ITSELF
(In Four Articles)

In proper sequence we have to consider now the Law of the Gospel
which is called the New Law: and in the first place we must consider
it in itself; secondly, in comparison with the Old Law; thirdly, we
shall treat of those things that are contained in the New Law. Under
the first head there are four points of inquiry:

(1) What kind of law is it? i.e. Is it a written law or is it
instilled in the heart?

(2) Of its efficacy, i.e. does it justify?

(3) Of its beginning: should it have been given at the beginning of
the world?

(4) Of its end: i.e. whether it will last until the end, or will
another law take its place?
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FIRST ARTICLE [I-II, Q. 106, Art. 1]

Whether the New Law Is a Written Law?

Objection 1: It would seem that the New Law is a written law. For the
New Law is just the same as the Gospel. But the Gospel is set forth
in writing, according to John 20:31: "But these are written that you
may believe." Therefore the New Law is a written law.

Obj. 2: Further, the law that is instilled in the heart is the
natural law, according to Rom. 2:14, 15: "(The Gentiles) do by nature
those things that are of the law . . . who have [Vulg.: 'show'] the
work of the law written in their hearts." If therefore the law of the
Gospel were instilled in our hearts, it would not be distinct from
the law of nature.

Obj. 3: Further, the law of the Gospel is proper to those who are in
the state of the New Testament. But the law that is instilled in the
heart is common to those who are in the New Testament and to those
who