Indian religion had degenerated in such a way that became mere external idolatry.
Superior castes tyrannized the people infusing religious terror into them. Even images of gods, with awful aspect, monstrous heads and macabre postures did not infuse love or veneration but superstition and panic.
After fighting during 1,500 years, the Aryans that migrated to Central Asia handed down the Revelation and Tradition of a splendid Religion to their descendants; millenary Vedas conveyed this religion. Vedas, which means “pure science”, are a series of hymns and chants that those ancient people usually offered to their gods; in the beginning, they did not write down these hymns, but conveyed them orally from generation to generation.