The Vedas consists of four works, the oldest of which is the Rig-Veda. The Rig-Veda is a collection of over 1,000 hymns, most of which invoke the deities Indra and Agni, the gods of war and fire respecively. The Rig-Veda also is a main source of information on the Rig Vedic civilization, and it is considered to be the oldest book in any Indo-Euopean language. The Rig-Veda also contains the earliest from of all Sanski mantras daing back to 1500 B.C. to 1000 B.C.
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