Who wrote the book of Hebrews? And the nominees are: Paul, Silas, Apollos, Philip, Clement of Rome, Epaphras, Barnabas, Priscilla, Luke and even Mary the mother of Jesus! Few scholars today believe Paul wrote the book. One of the few I can think that does espouse Pauline authorship is Robert Reymond in his book Paul Missionary Theologian. Most of the New Testament scholars I've read simply acknowledge their ignorance and add to the chorus started by Origen and say "Only God knows."
Along comes a new book by David Allen in the New American Commentary Studies in Bible & Theology Series called Lukan Authorship of Hebrews. Allen will definitely be swimming up stream with this view. I've never really looked at the subject that close but I'm intrigued by what Allen might have to say. The catalog description says the book has an endorsement from Paul Ellingworth "who has said Allen's is the best argument for Lukan authorship he has read."
David L. Allen is dean of the School of Theology, professor of Preaching, and director of the Center of Biblical Preaching at Southwestern Baptist Theological Seminary in Fort Worth, Texas.
Watch for it this June. It will be a hardcover with 400 pages and sell for $24.99.