The oldest inscriptions in Old Indic, the language of the "Rig Veda", are found not in northwestern India and Pakistan, but in northern Syria, the location of the Mitanni kingdom. The Mitanni kings took Old Indic throne names, and Old Indic technical terms were used for horse-riding and chariot-driving. The Old Indic term r'ta, meaning "cosmic order and truth", the central concept of the "Rig Veda", was also employed in the mitanni kingdom. And Old Indic gods, including Indra, were also known in the Mitanni kingdom.