This classic has been called “the greatest piece of writing that came from Luther's pen.” Luther gives an extensive treatment to what he saw as the heart of the gospel. He affirms our total inability to save ourselves and the sovereignty of divine grace in our salvation. As well as upholding the doctrine of justification by faith, he defends predestination as determined by the foreknowledge of God. Believers today stand in urgent need of such teaching as Luther here gives us–teaching which humbles man, strengthens faith, and glorifies God.