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.

An angel once disturbed the water in a pool at a specific time, and whoever entered the water right after it was stirred up was healed from their illness.

King James Version

Simple English

* Work in progress - there may be occasional inaccuracies