According to his earlier statements, attendance at the preaching had been voluntary, for the matter of the sermons was to be judged by the hearers, in order that they might avoid what was harmful; his subsequent practice of driving all to the preaching made an end of this freedom, or rather duty. Through the authorities, so far as his influence went, he insisted on this principle: “Even though they do not believe they must nevertheless, for the sake of the Ten Commandments, be driven to the preaching, so that they may at least learn the outward work of obedience.” He wrote this at a time when he had already justified such coercion at Wittenberg, viz. on Aug. 26, 1529, in a letter to the “strict and steadfast” Joseph Levin Metzsch of Mila, who was shortly after appointed by the Elector to take part in the Visitation.[928] Instructions sent by Luther on the same day to Thomas Löscher, pastor of the same locality, are to the same effect (“_cogendi sunt ad conciones … audiant etiam inviti_”).[929] The orders of the authorities concerning public worship were represented in the Visitation Rules for the pastors (1528) as universally binding: “All secular authority is to be obeyed because the secular powers are not ordering a new worship but enforcing peace and charity.”[930] The Preface of the Smaller Catechism (1531) was on the same lines. “Although we neither can nor should force anyone into the faith, yet the masses must be held and driven to it in order that they may know what is right or wrong in those among whom they live.”[931] In the same year Luther advised Margrave George of Brandenburg to compel the people to attend the Catechism “at the behest of the secular authority,” for, since they “are Christians and wish to be so called,” it was only fitting “they should be obliged to learn what a Christian ought to know.” The Ansbach preachers embodied this requirement in the same year in the alterations they proposed in the church-regulations.[932]