The Romans had a peculiar conception of the divine that was perhaps theirs alone among ancient peoples: that every action, every moment, every aspect of human life had its own specialist god — and that one had to know these gods by their proper names, and address them rightly, or the action would not prosper. The lists of these specialist gods were called the Indigitamenta, the books of the namings; they were kept by the pontifices and were the secret texts by which the priests knew which power to invoke at each juncture.
Of the gods named in the Indigitamenta we have only fragments, preserved in the polemics of the Christian fathers (who quoted them to mock) and in the antiquarian works of Varro (whose great Antiquitates Rerum Divinarum, in fifteen books, survives only in fragments). At the birth of a child, for example, the Roman parents could pray to Vagitanus (who oversees the first cry), Cunina (who watches the cradle), Levana (who lifts the child from the floor in the recognition rite), Rumina (who oversees the suckling), Educa (who teaches eating), Potina (who teaches drinking), Statanus and Statilinus (who teach standing), Abeona (who teaches the child to leave), Adeona (who teaches the child to return), Fabulinus (who teaches speech), Numina (who teaches counting), Camena (who teaches singing) — and these were only some.
Augustine, in his great mockery of Roman polytheism, made the rounds of the Indigitamenta in book IV of his City of God: there were gods, he reported, for the door's leaf and the door's hinge and the door's threshold, gods for the seed in the ground and gods for the sprout coming up, gods for the milling of grain and gods for the kneading of dough; there were Vatican (whose business was to attend to the first cry of an infant) and Cuba (who put the child to bed). What Augustine took as the absurdity of pagan religion was in fact the Roman religious genius — the conviction that every transition was numinous, every moment had its god, and the ritual specialist had to know them all by name.

