*x, both of which likely originated from an earlier voiceless lateral *l̥ˤ. Linguist Stefan Georg has proposed that the Turkic word ultimately originates as a loanword from Proto-Yeniseian *tɨŋgɨr- "high". History Tengri was the national god of the Göktürks, described as the "god of the Turks" (Türük Tängrisi). The Göktürk khans based their power on a mandate from Tengri. These rulers were generally accepted as the sons of Tengri who represented him on Earth. They wore titles such as tengrikut, kutluġ or kutalmysh, based on the belief that they attained kut, some sort of heavenly and spiritual force granted to these rulers by Tengri. Prior to foreign influences, the Turkic conception of tengri was regarded as the heaven or the will controlling heaven, probably some sort of force. Out of this, the concept of a personal being developed. First, when Turkic people took over other religions, the term tengri became the name of a (personal) god or "higher being". Tengri was the chief deity worshipped by the ruling class of the Central Asian steppe peoples in 6th to 9th centuries (Turkic peoples, Mongols and Hungarians). It lost its importance when the Uighuric kagans proclaimed Manichaeism the state religion in the 8th century. The worship of Tengri was brought into Eastern Europe by the Huns and early Bulgars. Tengri is considered to be the chief god who created all things. In addition to this celestial god, they also had minor divinities (Alps) that served the purposes of Tengri. As Gök Tanrı, he was the father of the sun (Koyash) and moon (Ay Tanrı) and also Umay, Erlik, and sometimes Ülgen. Mythology Tengri was the main god of the Turkic pantheon, controlling the celestial sphere. Tengri is considered to be similar to the Indo-European sky god, *Dyeus, and the structure of the reconstructed Proto-Indo-European religion is closer to that of the early Turks than to the religion of any people of Near Eastern or Mediterranean antiquity. In Christian Turkish usage Tengri is used for the father of Jesus, who is referred to as "Tengri Oghli" (Son of God) and "Mshikha Tengri" (Messiah God). Tengri is also compared to Allah and Khuda). Apart from foreign religious influences, as far as known today, the original Turkish concept of Tengri was that of "heaven" or a spirit ruling in heaven. This spirit was probably imagined as some sort of force, corresponding to "mana" in modern