I. That it is universal or common to all men, for we have deduced it from universal human nature.
II. That it does not depend on the truth of any historical narrative whatsoever, for inasmuch as this natural Divine law is comprehended solely by the consideration of human nature, it is plain that we can conceive it as existing as well in Adam as in any other man, as well in a man living among his fellows as in a man who lives by himself.
The truth of a historical narrative, however assured, cannot give us the knowledge nor consequently the love of God, for love of God springs from knowledge of Him, and knowledge of Him should be derived from general ideas, in themselves certain and known, so that the truth of a historical narrative is very far from being a necessary requisite for our attaining our highest good.
Still, though the truth of histories cannot give us the knowledge and love of God, I do not deny that reading them is very useful with a view to life in the world, for the more we have observed and known of men's customs and circumstances, which are best revealed by their actions, the more warily we shall be able to order our lives among them, and so far as reason dictates to adapt our actions to their dispositions.
III. We see that this natural Divine law does not demand the performance of ceremonies—that is, actions in themselves indifferent, which are called good from the fact of their institution, or actions symbolizing something profitable for salvation, or (if one prefers this definition) actions of which the meaning surpasses human understanding. The natural light of reason does not demand anything which it is itself unable to supply, but only such as it can very clearly show to be good, or a means to our blessedness. Such things as are good simply because they have been commanded or instituted, or as being symbols of something good, are mere shadows which cannot be reckoned among actions that are the offspring, as it were, or fruit of a sound mind and of intellect. There is no need for me to go into this now in more detail.
IV. Lastly, we see that the highest reward of the Divine law is the law itself, namely, to know God and to love Him of our free choice, and with an undivided and fruitful spirit; while its penalty is the absence of these things, and being in bondage to the flesh—that is, having an inconstant and wavering spirit.
These points being noted, I must now inquire
I. Whether by the natural light of reason we can conceive of God as a lawgiver or potentate ordaining laws for men?
II. What is the teaching of Holy Writ concerning this natural light of reason and natural law?
III. With what objects were ceremonies formerly instituted?