Here is what Peter had to say about the Epistles of Paul:
2 Peter 3:15-17
15And account that the longsuffering of our Lord is salvation; even as our beloved brother Paul also according to the wisdom given unto him hath written unto you;
16As also in all his epistles, speaking in them of these things; in which are some things hard to be understood, which they that are unlearned and unstable wrest, as they do also the other scriptures, unto their own destruction.
17Ye therefore, beloved, seeing ye know these things before, beware lest ye also, being led away with the error of the wicked, fall from your own stedfastness
Gnostics and +Paul use the same argument as well. Why would a loving, merciful God make it difficult for poor illiterate peasants to understand? Would you teach your 5-year old quantum mechanics and derogate him for not being able to understand, and tell him his limited understanding is to his destruction? How loving is that, Blogger?
The truth, Blogger, is that the all Scriputre has been tampered with, none of it original. Thus we work on presumption, not fact, that what we read is what was written at that time by whosoever we believe wrote it.
I pay more attention to the broader message than to particulars, added, subtracted or invented.
The only thing about Sola Scriptura followers is that they read the Bible as if it were written in stone tablets by God himself.
That's the closest thing to Islam among various Christian groups, imo, of course.