A friend e-mailed after my post yesterday recommending Tim Keller’s The Reason for God . He suggested I provide a link to Keller MP3s on the Internet.
I have not listened to even the majority of these recently collected Keller resources, but if you want to start somewhere I suggest listening to a few talks on “defeater beliefs,” evangelistic material which made it into his book.
Or try these two stimulating lectures I just listened to in the last two days, delivered at the Highland Theological College in Scotland. Remember that he ties some of his advice to his specific situation in NYC. And these lectures will mean more to you if you have a well-formed philosophy of expository preaching.