Accordingly, when the Variata was boldly exploited by the Romanists to circulate all manner of slanders about the Lutherans; when it also became increasingly evident that the Reformed and Crypto-Calvinists employed the Variata as a cover for their false doctrine of the Lord's Supper; when, furthermore within the Lutheran Church the suspicion gradually grew into conviction that Melanchthon, by his alterations had indeed intended to foist doctrinal deviations upon the Lutheran Church; and when, finally, a close scrutiny of the Variata had unmistakably revealed the fact that it actually did deviate from the original document not only in extent, but also with regard to intent, not merely formally, but materially as well,--all loyal Lutheran princes and theologians regarded it as self-evident that they unanimously and solemnly declare their exclusive adherence to the Augsburg Confession as presented to Emperor Charles at Augsburg, and abandon the Variata without delay. At Naumburg, in 1561, the Lutheran princes therefore, after some vacillation, declared that they would adhere to the original Augsburg Confession and its "genuine Christian declaration and norm," the Smalcald Articles. Frederick III of the Palatinate alone withdrew, and before long joined the Calvinists by introducing the Heidelberg Catechism, thus revealing the spuriousness of his own Lutheranism. It was due especially to the Crypto-Calvinists in Electoral Saxony and to the _Corpus Doctrinae Philippicum_ that the Variata retained a temporary and local authority, until it was finally and generally disowned by the Lutheran Church and excluded from its symbols by the adoption of the Formula of Concord. For here our Church pledges adherence to "the First, Unaltered Augsburg Confession, delivered to the Emperor Charles V at Augsburg in the year 1530, in the great Diet." (777, 4; 847, 5; 851, 5.) And in the Preface to the Book of Concord the princes and estates declare: "Accordingly, in order that no persons may permit themselves to be disturbed by the charges of our adversaries spun out of their own minds, by which they boast that not even we are certain which is the true and genuine Augsburg Confession, but that both those who are now among the living and posterity may be clearly and firmly taught and informed what that godly Confession is which we and the churches and schools of our realms at all times professed and embraced, we emphatically testify that next to the pure and immutable truth of God's Word we wish to embrace the first Augsburg Confession alone which was presented to the Emperor Charles V, in the year 1530, at the famous Diet of Augsburg, this alone (we say), and no other." (15.) At the same time the princes furthermore protest that also the adoption of the Formula of Concord did not make any change in this respect. For doctrinally the Formula of Concord was not, nor was it intended to be, a "new or different confession," _i.e._, different from the one presented