Some samples, if I may:
An essential part of this doctrine, as it has been historically articulated by Protestants, is that theology must be done without allowing Tradition or a Magisterium (teaching authority) any binding authority. If Tradition or a Magisterium could bind the conscience of the believer as to what he was to believe then the believer would not be looking to Scripture alone as his authority.
A necessarily corollary of the doctrine of sola scriptura is, therefore, the idea of an absolute right of private judgment in the interpretation of the Scriptures. Each individual has the final prerogative to decide for himself what the correct interpretation of a given passage of Scripture means, irrespective of what anyone-or everyone-else says. If anyone or even everyone else together could tell the believer what to believe, Scripture would not be his sole authority; something else would have binding authority…
Of course, we all know that the average Christian does not exercise this role in any consistent way, even the average person admitted by Fundamentalists to be a genuine, “born again” believer. There are simply too many godly grannies who are very devout in their faith in Jesus, but who are in no way inclined to become theologians…
…Not only is the average Christian totally disinclined to fulfill the role of theologian, but if they try to do so, and if they arrive at conclusions different than those of the church they belong to-an easy task considering the number of different theological issues-then they will quickly discover that their right to private judgment amounts to a right to shut up or leave the congregation. Protestant pastors have long realized (in fact, Luther and Calvin realized it) that, although they must preach the doctrine of private judgment to ensure their own right to preach, they must prohibit the exercise of this right in practice for others, lest the group be torn apart by strife and finally break up…
The disintegration of Protestantism into so many competing factions, teaching different doctrines on key theological issues…is itself an important indicator of the practical failure of the doctrine of private judgment, and thus the doctrine of sola scriptura…
…sola scriptura presupposes (1) the existence of the printing press, (2) the universal distribution of Bibles, (3) universal literacy, (4) the universal possession of scholarly support materials, (5) the universal possession of adequate time for study, (6) universal nutrition, and (7) a universal education in a high level of critical thinking skills. Needless to say, this group of conditions was not true in the crucial early centuries of the Church, was not true through the main course of Church history, and is not even true today. The non-existence of the printing press alone means sola scriptura was totally unthinkable for almost three-quarters of Christian history!
…even the average devout Christian has no inclination whatsoever to conduct the kind of Bible study needed to become his own theologian and the fact that he is encouraged by many pressures from his own pastor and congregation (including the threat of being cast out) to fall in line and not challenge–especially publicly challenge–the party platform.
CHRISTIANITY FOR THE COMMON MAN?
It is thus hard to think of sola scriptura as anything but the theory spawned by a bunch of idealistic, Renaissance-era dilettantes–people who had an interest in being their own theologians, who had a classical education in critical thinking skills, who had adequate nutrition, who had plenty of leisure time for study, who had plenty of scholarly support materials, who had good reading skills, who had access to Bible-sellers, and most importantly, who had printed Bibles!
The average Christian today, even the average Christian in the developed world, does not fit that profile, and the average Christian in world history certainly did not, much less the average Christian in the early centuries. What this means, since God does not ask a person to do what they are incapable of doing, is that God does not expect the average Christian of world history to use sola scriptura. He expects the average Christian to obtain and maintain his knowledge of theology in some other way.
But if God expects the average Christian to obtain and maintain the Christian faith without using sola scriptura, then sola scriptura is not God’s plan. (Jimmy Akin,
jimmyakin.com/library/practical-problems-of-sola-scriptura )