The name “John Bunyan” is not in the Bible.
John Bunyan was an author who wrote “Pilgrim’s Progress”.
Pilgrim’s Progress is a story that mirrors things that happen in a Christian’s life.
There are several versions of it. There is a longer version for adults. There is a shorter version for children.
Interestingly, like Paul the Apostle who wrote parts of the New Testament while in prison, John Bunyan began Pilgrim’s Progress while in prison.
A blog post can only introduce a topic but not cover it in depth. For more study on various topics, click here for links to various Christian ministries.
Depending on the ministry, there may be online church services, YouTube videos, podcasts, radio programs, books, teaching, or more. You have to seek out what they have.