Probably the oldest function of fire in regard to its cult is that of burning and dispelling evil spirits and hostile magic. It still survives in the Rigveda from an earlier age, Agni being said to drive away the goblins with his light and receiving the epithet rakshohan "goblin-slayer." This activity is at any rate more characteristic of Agni than of any other deity, both in the hymns and in the ritual of the Vedas.
Since the soma sacrifice, beside the cult of fire, forms a main feature in the ritual of the Rigveda, the god Soma is naturally one of its chief deities. The whole of the ninth book, in addition to a few scattered hymns elsewhere, is devoted to his praise. Thus, judged by the standard of frequency of mention, Soma comes third in order of importance among the Vedic gods. The constant presence of the soma plant and its juice before their eyes set limits to the imagination of the poets who describe its personification. Hence little is said of Soma's human form or action. The ninth book mainly consists of incantations sung over the soma while it is pressed by the stones and flows through the woollen strainer into the wooden vats, in which it is finally offered as a beverage to the gods on a litter of grass. The poets are chiefly concerned with these processes, overlaying them with chaotic imagery and mystical fancies of almost infinite variety. When Soma is described as being purified by the ten maidens who are sisters, or by the daughters of Vivasvat (the rising sun), the ten fingers are meant. The stones used in pounding the shoots on a skin "chew him on the hide of a cow." The flowing of the juice into jars or vats after passing through the filter of sheep's wool is described in various ways. The
