He isn't pure Reformed and may have had some liberal leanings, but his writings still challenge the church today in many excellent ways. He challenges us to make the Christian faith bigger than the cheap-grace formula of get-your-sin-forgiven-in-Jesus-and-you're-into-heaven. He calls us to look deeply into who Christ is, who we are in Christ, and how that changes everything about how we relate to others, our culture, and the world. And he does it with intelligence. There's value in that, especially in today's tepid church culture. I think you can get something profitable out of his writings even if you don't swallow everything whole.