I’ve listened to a lot of the messages from the 2007 Desiring God National Conference. The conference theme was Stand: A Call For The Endurance of The Saints. Since they are found on the Desiring God website, they are all available for free. Take advantage of some good teaching by men like Piper, MacArthur, Randy Alcorn, Jerry Bridges and others. This will be a good use of your time to persevere.
