In honor of Reformation Day (though a few days late, unfortunately):
“[T]he idea of the Bible’s truthfulness was not enough. Calvin and the other Reformers were well aware that those in the Roman Church agreed with them formally on this point.
Where they differed was in the areas of sufficiency and clarity. First, Calvin argued that the Bible in and of itself was sufficient as an authority for the church.”
Julius Kim, from With Calvin in the Theater of God