Beginning in 1805 Lalawethika had a series of religious visions that transformed his life, caused him to change his name to Tenskwatawa (meaning "Open Door"), and led him to reject his old ways. He experienced his first vision in May 1805, when he fell into unconsciousness during one of his alcoholic stupors and was thought to be dead. Unexpectedly reviving as his body was being prepared for burial, he recounted a powerful vision of two different worlds, one filled with ample blessings for the virtuous ones who lived as the Master of Life intended, while the other world was filled with pain, hardship, and terror for those who refused to follow traditional tribal ways. Tenskwatawa became known as "The Prophet," began preaching and gathered a growing number of followers. He soon emerged as a powerful and influential spiritual leader. More visions followed in succeeding months, including revelations that the European invaders from the east were "the children of the Evil Spirit.".