My mom has believed in God on and off over her life but often talks of her near death experience. She was a young girl with poor swimming skills (grew up very very poor among six kids and a single mother). The kids would get into all kinds of mischief and were swimming in a lake.
My mom began to drown. She recalled being under the water for a long time and began to travel up a tunnel towards a light. She felt euphoric and wanted to enter the light, she recognized it as Heaven.