"Amazing Grace" is a Christian hymn published in 1779, written in 1772 by English Anglican clergyman and poet John Newton (1725–1807). It is possibly the most sung and most recorded hymn in the world, and especially popular in the United States, where it is used for both religious and secular purposes. Newton wrote the words from personal experience; he grew up without any particular religious conviction, but his life's path was formed by a variety of twists and coincidences that were often put into motion by others' reactions to what they took as his recalcitrant insubordination.
https://en.wikipedia.org/wiki/Amazing_Grace