The story of Dhul Qarnayn in the Quran 18: 83-100, on a strictly literary level closely matches Christian mythology regarding Alexander the Macedonian. However, if one applies this story on a spiritual level, it sounds like the historical person referenced is, quoting Wiki: ?As?ad the Perfect, called “Abu Karib”, full name: Abu Karib As’ad Ibn Hassan Maliki Karib Yuha’min, was king (Tubba’) of the Himyarite Kingdom (modern day Yemen). He ruled Yemen from 378-430. As’ad is cited in some sources as the first of several kings of the Arabian Peninsula to convert to Judaism. He was the first one to cover the Kaaba with the kiswah.” The title ‘tubba’ according to Wiki means: “the one who follows the sun like a shadow” (and) was used by Himyarites to refer to their rulers.”
Wiki gives a brief biography of Tub’a Abu Kariba As’ad:
One of the first Jewish kings, Tub’a Abu Kariba As’ad (r. 390–420), is believed to have converted following a military expedition into northern Arabia in an effort to eliminate Byzantine influence. The Byzantine emperors had long eyed the Arabian Peninsula and sought to control the lucrative spice trade and route to India. The Byzantines hoped to establish a protectorate by converting the inhabitants to Christianity. Some progress had been made in northern Arabia but they had little success in ?imyar.
Abu-Kariba’s forces reached Yathrib and, meeting no resistance, they passed through the city, leaving the king’s son behind as governor. Abu-Kariba soon received news that the people of Yathrib had killed his son. He turned back in order to wreak vengeance on the city. After cutting down the palm trees from which the inhabitants derived their main income, he laid siege to the city. The Jews of Yathrib fought side by side with their pagan neighbors.
During the siege Abu-Kariba fell severely ill. Two Jewish scholars in Yathrib, Ka’ab and Asad by name, called on the king in his camp and used their knowledge of medicine to restore him to health. While attending the king, they pleaded with him to lift the siege and make peace. The sages’ appeal is said to have persuaded Abu-Kariba; he called off his attack and also embraced Judaism along with his entire army. At his insistence, the two Jewish scholars accompanied the Himyarite king back to his capital, where he demanded that all his people convert to Judaism. Initially, there was great resistance. After an ordeal had justified the king’s demand and confirmed the truth of the Jewish faith, many Himyarites supported Judaism. Some historians argue that the people were not motivated by politics, but that Judaism, by its philosophical, simplistic, and austere nature, was attractive to the nature of the Semitic people.
Abu-Kariba continued to engage in military campaigns and met his death under unclear circumstances. “
So, applying this information on a spiritual level, Dhul Qarnayn (qarana in Arabic = ‘to join, unite’) means ‘the one who united the West (setting of the sun) and the East (rising of the sun)” or the 2 ends of his kingdom, both of which were immersed in pagan ideology and polytheism. He travelled to the eastern parts of his kingdom and found ignorance and social regression (muddy waters and naked people). In the western part of his kingdom he found a people who were coping with out of control social disorder symbolized by the wild tribes of Yjuj and Majuj or Gog and Magog in biblical language.
The word Gog originates in the Sumerian language. Gog or Gug in the Sumerian language means hostility, war. The word Magog or Mu-gug (mu is a prefix for an agentive subject like the prefix ‘m kasrah’ in Arabic) means war monger. So, Yjuj and Majuj/Gog and Magog are metaphors for war and those who instigate war. Yjuj and Majuj, therefore, are not a specific people but represent wanton hostility and aggression for the benefit immoral powers and those they represent.
The victims of tribal hostilities represented by Yjuj and Majuj asked Abu-Kariba ‘to build’ a wall which would control these unruly, tribal tendencies and that wall was the Torah law. This king warned that when this wall was flattened (the law disregarded), the tribes would again be reduced to war and tribal conflict which would devastate the people. The Torah was absorbed into the Quran which has been disregarded for Shia mythology, Communist socialism and Western political philosophy. The people in Yemen, the kingdom of Tub’a Abu Kariba, are now being massacred because they have disregarded the Quran and adopted false ideologies. In other words, they have blown the trumpet of war and they have let loose Yjuj and Majuj who are literally swarming from every hill. The people of Yemen are literally facing their day of judgement while they watch the fires of hell burn as their cities are mercilessly bombed into rubble.