One of these is “Sola Scriptura isn’t in the Bible”. Another is an appeal to Augustine’s writings vs the Donatists, as if the Reformers were somehow equivalent to the Donatists. But this appeal is shown to be spurious in the Reformed Confessions as well as in Calvin’s own writings.
First, the 2nd Helvetic Confession, Chapter 17 notes:
We, therefore, call this Church catholic because it is universal, scattered through all parts of the world, and extended unto all times, and is not limited to any times or places. Therefore, we condemn the Donatists who confined the Church to I know not what corners of Africa. Nor do we approve of the Roman clergy who have recently passed off only the Roman Church as catholic.
For the Reformed, there is an equal condemnation of the Donatist errors and the claims of exclusivity of the Roman hierarchy. As seen further in Chapter 18:
