On February 18, 2011 at Convocation, North America's largest weekly gathering of Christian students, bestselling author and pastor Dr. David Platt commissioned Liberty University students to present their lives as "blank checks" and to surrender their gifts and talents to be used in ways that will advance the kingdom of God. Platt is the pastor of The Church at Brook Hills in Birmingham, Ala., and author of the bestselling book "Radical: Taking Back Your Faith from the American Dream."