The wives of the gods _(dev[=a]n[=a]m patn[=i]r yajati)_, occasionally mentioned in the Rig Veda, have now an established place and cult apart from that of the gods (_ib_. I. 9. 2. 11). The fire on the hearth is god Agni in person, and is not a divine or mystic type; but he is prayed to as a heavenly friend. Some of these traits are old, but they are exaggerated as compared with the more ancient theology. When one goes on a journey or returns from one, 'even if a king were in his house' he should not greet him till he makes homage to his hearth-fires, either with spoken words or with silent obeisance. For Agni and Praj[=a]pati are one, they are son and father (_ib_. II. 4. 1. 3, 10; VI. 1. 2. 26). The gods have mystic names, and these 'who will dare to speak?' Thus, Indra's mystic name is Arjuna (_ib_. II. 1. 2. 11). In the early period of the Rig Veda the priest dares to speak. The pantheism of the end of the Rig Veda is here decided and plain-spoken, as it is in the Atharvan. As it burns brightly or not the fire is in turn identified with different gods, Rudra, Varuna, Indra, and Mitra (_ib_. II. 3. 2. 9 ff.). Agni is all the gods and the gods are in men (_ib_. III. 1. 3. 1; 4. 1. 19; II. 3. 2. 1: Indra and King Yama dwell in men). And, again, the Father (Praj[=a]pati) is the All; he is the year of twelve months and five seasons(_ib_. I. 3. 5. 10). Then follows a characteristic bit. Seventeen verses are to be recited to correspond to the 'seventeenfold' Praj[=a]pati. But 'some say' twenty-one verses; and he may recite twenty-one, for if 'the three worlds' are added to the above seventeen one gets twenty, and the sun (_ya esa tapati_) makes the twenty-first! As to the number of worlds, it is said (_ib_. I. 2. 4. 11, 20-21) that there are three worlds, and possibly a fourth.