John Barnett’s ministry Discover the Book is a wonderful and expansive resource for the church and the MP3 revolution. The website contains hundreds of John’s sermons and study series that he’s preached over the years at Tulsa Bible Church in Oklahoma. All the downloads are free. Barnett is a gifted and godly expositor of God’s Word.
Living Hope for the End of Days is a 52 message journey through the book of Revelation, and a companion book has been published as a one year devotional. It’s a series that Barnett says is the result of a lifetime of study through Revelation.
I have not listened to all the messages in this series, as of yet, but I have been blessed by what few I have. There is also a large companion book divided into a year-long daily devotional based on the same material, which is also an excellent resource which I highly recommend. This is a richly rewarding series that will help you see Christ exalted throughout the book of Revelation.
Faith by Hearing 