What did the old Romans know about the nature of the objects of their worship? All religion is in its development a process of gaining such knowledge: if it makes no progress it is doomed. It is because the Jews made such wonderful progress in this path, in spite of formalism and backsliding, that they were chosen to produce a Teacher whose life and doctrine revealed the will and the nature of His Father for the eternal benefit of mankind. The fear of the Lord is imperfect knowledge, it is but the beginning of wisdom; but it could become, in a Jew like St. Paul, the perfect knowledge of His will. It may seem absurd to think of two such religions as the Jewish and the Roman side by side; but the absurdity vanishes when we begin to understand the humble beginnings of the Jewish religion as scientific research has already laid it bare. Knowledge of the Power manifesting itself in the universe is open to all peoples alike, and some few have made much progress in it beside the Jews. The Romans were not among these, at any rate in all the later stages of their history; but we have to ask how far they got in the process, and later on again to ask also why they could go no farther.[220] We have seen how one great forward step in the attainment of this knowledge was made in the religion of the household, when the house had become a kind of temple, being the dwelling of divine as well as human beings, and when the cultivated land had been separated by a sacred boundary from the mountain or forest beyond, with their wild and unknown spiritual inhabitants. We met, however, with nothing in the house or on the land that we can properly call a god, if we may use that word for the moment in the sense of a personality as well as a name, and a personality perfectly distinct from the object in which it resides. Vesta seems to be the fire, Penates the store, or at least spirits undistinguishable from the substance composing the store. But inasmuch as the farmer knew how to serve these spirits and address them, looking upon them as friends and co-habitants of his own dwelling, we may go so far as to guess that they were somewhat advanced in their career as spirits, and might possibly develop into powers of a more definite kind, if not into gods, real _dei_ conceived as persons.[221] In other words--for it is better to keep as far as we can to the subjective or psychological aspect of them--the Roman might realise the Power better by getting to think of his nameless spirits as _dei_ at work for his benefit if rightly propitiated. There are some signs in the calendar and the other sources I mentioned just now that such a process had been going on before the State arose; and it is certain that the whole field of divine operation had been greatly widened by that time, as we might expect from the enlarged sphere of man's experience and activity.