For Martin Luther, the issue of man’s bondage to sin, and moral inability to believe or obey, was the root issue of the Reformation — and the lynchpin of Protestantism. John Piper | Together for the Gospel 2016 | #T4G #T4G16 | Louisville http://desiringgod.org/messages/the-bondage-of-the-will-the-sovereignty-of-grace-and-the-glory-of-god