Both Buddhism and Jainism were direct challenges to the old Brahmanic religion. Both rejected animal sacrifice, which by then was a central element in the rituals performed by Brahmin priests. Even more important, both religions tacitly rejected the caste system, accepting people of any caste into their ranks. Over the next several centuries (ca. 400 B.C.E.–200 C.E.), in response to this challenge, the Brahmanic religion evolved in a more devotional direction, developing into the religion commonly called Hinduism. In Hinduism Brahmins retained their high social status, but it became possible for individual worshippers to have more direct contact with the gods, showing their devotion without using priests as intermediaries.

The bedrock of Hinduism is the belief that the Vedas are sacred revelations and that a specific caste system is implicitly prescribed in them. Hinduism is a guide to life, the goal of which is to reach union with brahman, the unchanging ultimate reality. There are four steps in this search, progressing from study of the Vedas in youth to complete asceticism in old age. In their quest for brahman, people are to observe dharma (DAHR-muh), the moral law.

Hinduism assumes that there are innumerable legitimate ways of worshipping brahman, including devotion to personal gods. After the third century B.C.E. Hinduism began to emphasize the roles and personalities of thousands of powerful gods. These gods were usually represented by images, either small ones in homes or larger ones in temples. People could show devotion to their personal gods by reciting hymns or scriptures and by making offerings of food or flowers before these images. Hinduism’s embrace of a large pantheon of gods enabled it to incorporate new sects, doctrines, beliefs, rites, and deities.

A central ethical text of Hinduism is the Bhagavad Gita (BAH-guh-vahd GEE-tuh), a part of the world’s longest ancient epic, the Mahabharata. The Bhagavad Gita offers guidance on the most serious problem facing a Hindu — how to live in the world and yet honor dharma and thus achieve release from the wheel of life. The heart of the Bhagavad Gita is the spiritual conflict confronting Arjuna, a human hero about to ride into battle against his kinsmen. As he surveys the battlefield, struggling with the grim notion of killing his relatives, Arjuna voices his doubts to his charioteer, none other than the god Krishna. When at last Arjuna refuses to spill his family’s blood, Krishna explains compassionately to Arjuna the duty to act — to live in the world and carry out his duties as a warrior. Indeed, the Bhagavad Gita emphasizes the necessity of action, which is essential for the welfare of the world. For Arjuna the warrior’s duty is to wage war in compliance with his dharma. Only those who live within the divine law without complaint will be released from rebirth. One person’s dharma may be different from another’s, but both individuals must follow their own dharmas.

Hinduism provided a complex and sophisticated philosophy of life and a religion of enormous emotional appeal that was attractive to ordinary Indians. Over time it grew to be the most common religion in India. Hinduism validated the caste system, adding to the stability of everyday village life, since people all knew where they stood in society. Hinduism also inspired the preservation of literary masterpieces in Sanskrit and the major regional languages of India. Among these are the Puranas, which are stories of the gods and great warrior clans, and the Mahabharata and Ramayana, which are verse epics of India’s early kings.