John 5:4 in the King James Version
For an angel went down at a certain season into the pool, and troubled the water: whosoever then first after the troubling of the water stepped in was made whole of whatsoever disease he had.
Context
3 In these lay a great multitude of those who were sick, blind, lame, or paralyzed, waiting for the moving of the water;
4 for an angel went down at certain times into the pool and stirred up the water. Whoever stepped in first after the stirring of the water was healed of whatever disease he had.
5 A certain man was there who had been sick for thirty-eight years.