Oi Adai is the Jarai supreme being, a remote high god associated with the sky and set above the multitude of yang that animate the natural and social world. In the everyday religion of the highlands it is the lesser yang, of rice, water, mountain, hearth, and ancestor, who receive the bulk of sacrifice, while Oi Adai remains a distant guarantor of cosmic order, invoked in oaths and solemn assurance. His name pairs the honorific oi, grandfather or revered lord, with the divine name Adai, cognate with the Ede supreme god Ae Die. The concept proved durable enough that Christian missions later took Oi Adai as the Jarai term for God, a continuity that has sometimes blurred the earlier, more diffuse indigenous conception.