Gog and Magog, or Ya'juj and Ma'juj in Arabic, are two hostile and corrupt tribes mentioned in the Quran and Hadith as a major sign of the end times. Islamic scholars, including Ibn Kathir, identify them as human descendants of Noah's son, Japheth. The Quran narrates the story of the righteous ruler Dhul-Qarnayn, who built a formidable barrier of iron and copper to contain them and protect a vulnerable people from their corruption. Their eventual release from this confinement will usher in a period of great tribulation, as they swarm across the earth in vast numbers, causing widespread chaos and destruction. Their reign of terror will conclude with their divine destruction, a testament to Allah's ultimate power.