How extensive is your personal library and how much time do you spend preparing for a typical sermon?

When I [Adrian Rogers] begin my sermon preparation, I am drawing upon work which I have accumulated over thirty or forty years. When I begin my exegesis of a passage, I draw from my files all the materials related to that text. I have a file card on every chapter of the Bible. 

This holds true of both exegesis work and illustrations. Such a filing system enables me to see what I have filed over the years on that text. Thus, when I prepare, I have available my library, my files, and, of course, my memory of the subject. 

After I have assembled all the material, it requires between four to eight hours to complete a sermon. 

Obviously, Wednesday night messages, and sometimes Sunday night messages, are given less time for preparation. I wish I had time to give quality time to each message, but being a busy pastor there just is not enough time for extensive preparation of each sermon. 

I have hardly ever preached a message that I felt was fully ripe, fully mature before I picked it.

*This question and answer were extracted from "Love Worth Finding: The Life of Adrian Rogers and His Philosophy of Preaching.”