Theological Works, Sermons & Hymns: The Ninety-five Theses, The Bondage of the Will, A Treatise on Christian Liberty, Prayers, Hymns, Letters and many more. Martin Luthers theology is based on the Bible and not on dogmas. Referring to Pauls Epistle to the Romans, he claims that salvation is given through Gods grace and not through deeds. It was adopted by Lutheran Churches, and also by the other R...