[Just mythoughts]

Using scripture alone show that Matthew wrote a gospel and that it is inspired. It may not be in the form of a question, but wasn’t it clear enough what I am asking for?

No it was NOT clear at all. And this is even more confusing... Using scripture alone Psalms 22 if you consider that Scripture.

[vladimir998]

No, I don’t think it is confusing at all. Since Protestants say they believe in sola scriptura they should have no troubles whatsoever understanding it.