The Confutatio Augustana was the Roman Catholic refutation (confutation) of the Augsburg Confession, often referred to in the theological literature as simply the Confutatio. On 25 June 1530 the Protestant Imperial States of the realm met at the Diet of Augsburg, and presented Charles V with the Augsburg Confession, largely the work of Philipp Melanchthon setting out the doctrines and practices of the church in the Protestant principalities. The emperor commissioned the papal theologians to prepare a response. An initial version of the Confutatio was rejected by the emperor, as excessively polemic and verbose. In formulating the Confutatio, the lead was taken by Johann Eck. On 3 August 1530, the final version was read at the Diet. The Confutatio clearly rejected the statements of the Augsb