/summa/FS/FSVI/FS_Q106:
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?