In the winter or autumn of 1555, Erskine gave a supper, where Knox was to argue against CRYPTO-protestantism.
"John Knox and the Reformation"
Andrew Lang
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.
"Historical Introductions to the Symbolical Books of the Evangelical Lutheran Church"
Friedrich Bente
Especially during and after the controversies on the Interim, as well as in the subsequent controversies with the CRYPTO-Calvinists, the Lutherans became more and more convinced that the Smalcald Articles and not the Variata, contained the correct exposition of the Augsburg Confession.
"Historical Introductions to the Symbolical Books of the Evangelical Lutheran Church"
Friedrich Bente