The Great Flood refers to the story of Noah's Ark referred to in the Old Testament Genesis, which reads : "The Lord, seeing that men were guilty of great sin on earth, proclaimed that he would use the Flood to destroy all flesh and blood creatures on earth, and that none of them would die."
The ancient Hebrews had a great flood that destroyed almost all of humanity, leaving only the legend of Noah's family, and the ancient Greeks had similar flood stories. The source of these legends is Sumerian mythology. On the Clay Tablets of the Sumerians, the earliest versions of this story were found. The story goes that the gods decided to destroy humanity, but the water god Grace aroused compassion and informed the pious Giusudra. Giusudra built a large ship, and he himself, his family, and some of the animals hid on it beforehand. After the flood, only the Giusudra family and the animals on his ship survived. This story was inherited by the ancient Hebrews through the epic Gilgamesh and passed on to the Greeks, so that there is a flood legend that has been passed down to this day.
The Great Flood is the common legend of many peoples in the world, and there are legends of the flood in mesopotamia, Greece, India, China, Maya and other civilizations. Among them, the legends of the various peoples located in Mesopotamia clearly have the same origin. According to the Christian Bible, this legend has become varied due to the gradual dispersion of the inhabited areas of various ethnic groups in the future. On the other hand, as historiography penetrates into the cultures and legends of the peoples of the earth, it is found that this legend of the Great Flood is circulating all over the world. Many historians have tried to find legends from all over the place and find some historical sites from them.
However, there are also some peoples with a long history, such as the Mongols, Koreans, Japan and central Asian peoples, who have no legend of "flood annihilation", which has aroused the doubts of opponents.