I wanted to recommend a couple of books to you that I have read recently.
“If You Want to Walk on Water, You Have to Get Out of the Boat” by John Ortberg. This is a good book taken mostly from the story of Peter walking on the water. Has some great principles about faith and trusting God to do big things.
“The Terrestria Chronicles” by Ed Dunlop. These are children’s books that are similar to Pilgrim’s Progress, but very fascinating for adults to read. I have really been enjoying reading them and have gotten alot of sermon illustrations from them. I highly recommend them for every Christian and every family. The cost is only $48 for the whole set of 7 books.