Already in the Theses Bernenses (1528), in contrast to the Lutheran confessional writings, we find an initial description of Scripture as the Word of God and therefore as the ground of theology and the church, indicating early on the Reformed theology, both in concessions and in more or less systematic works, to begin with a clear enunciation of its principia (Richard A. Muller, Post-Reformation Reformed Dogmatics, 1:54).