India was regarded as Vishwaguru (Teacher of the World) due to its cultural / religious qualities. All the gods and goddess, being huge in number, 

have been classified under in three classes.

1. Gods dwelling in heaven – Varun, Sun, Savitri, Aditi, Usha, Mitra, Vishnu and Ashwin.

2. Earthly Gods – Earth, Agni, Som, Brihaspati, Saraswati etc. 

3. Atmospheric Gods – Varun, Vayu, Indra, Rudra, Parjanaya and Marut.

Yajna – The gods and goddesses were worshipped by offering prayers and performing the yajna. The divine power has performed the work of creation and people worship in different forms. It is said in the Rigveda, ‘Ekam sat get viprah bahudha vadanti’ (truth and god are one).

In Upanishads, he has been called by the name of ‘Param Brahma’and our soul is a part of that Param Brahma. Brahma and soul are one and the same. According the philosophy of the Upanishads, the whole universe has been created by Brahma and this universe again get unified with Brahma.

Worship of Nature – People worshipped nature in different forms. Inspite of worshipping multiple divine powers of nature, stress has been laid on the absolute oneness of God.