Book Review: Orthodox Theology: The Burning Bush: On the Orthodox Veneration of the Mother of God. By Sergius Bulgakov. Translated by Thomas Allen Smith. Grand Rapids, MI: William B. Eerdmans, 2009. Pp. xxiv + 191. £18.99 (pbk). ISBN 978-0-8028-4574-0 - Louth, Andrew (Irish theological quarterly, 2010)