The Aztecs had this belief.
john smith
The Quetzalcoatl is the feathered serpent worshiped by the Mayans. The Mayan leader, Montezuma, believed that the white men were the famous God returned.
Quetzalcoatl promised to return and take his throne
they believed that the Spanish were the emissaries of the god Quetzalcoatl, who was believed to have been turned into a bearded man. According to their mythology, the Aztecs believed that when Quetzalcoatl left on the Eastern Sea, he vowed to return and reclaim his throne in the year 2 Reed, which in our calender is 1519 AD.
When Spanish conquistador Hernan Cortés arrived, the Aztecs believed he was Quetzalcoatl, a god who would bring peace to Mexico (some hope!). "Quetzalcoatl" meant feathered snake.
Montezuma thought that Cortes was Quetzalcoatl because Quetzalcoatl was white and so Cortes is white.
The god was believe to have left and would return one day in the year 1 atl. Cortes confused Montezume and made him believe he was the returning god, Quetzalcoatl
Quetzalcoatl was the main god or sun god of the Aztec people. so Quetzalcoatl was not an event but a person they worshiped. It was said that he would return to his people one day and the Aztecs waited for that to happen. I don't know if they sacrificed anything to him to celebrate him however.
Spanish conquistadors commanded by Hernando Cortez arrived in the same year that the Aztecs believed their god Quetzalcoatl would return. At first the Aztecs believed that Cortez was Quetzalcoatl, but Quetzalcoatl was a bloodthirsty god who demanded human sacrifice, and the Spanish were disgusted by this practice. Cortez' army was small but much better equipped, and they found thousands of allies in subject tribes which the Aztecs had conquered and were using to feed Quetzalcoatl. The Aztec king, Montezuma, was killed by his own people when he tried to prevent war with the Spanish, and and the Aztecs were defeated eventually. The Spanish also brought missionaries to Mexico, and the religion of the Aztecs was quickly replaced by Roman Catholicism.
The Aztecs welcomed Hernan Cortes because they believed he was the god Quetzalcoatl. There was a prophecy that this god would return one day, and Cortes' arrival in 1519 coincided with the time frame of this prediction.
true
I am not sure that there is a real answer. He left on a ship after teaching the Aztecs new ways and was never heard from again...with the promise that he would return again.