Michael Horton's newest book, The Gospel-Driven Life: Being Good News People in a Bad News World, which serves as a follow-up to Christless Christianity, will not be released until October. But you can hear lectures that form the content of this new book now.
He spoke on this subject at the Spring Theology Conference of the Reformation Society of Oregon, and they have graciously made the MP3s of his lectures available. Click here to download them.