That's why He's God. Scripture has a supernatural source. And don't discount the use of the many Scriptorium in the ancient world. We. can show the origin of the NT but you are unable to show us the source of tradition. I just thought of a real world example of the different rules of faith in action. Because the notion that tradition and scripture together with the magisterium are superior why is there a chasm between these two men:
but not these two men (SS as a rule of faith) all separated by about a 100 years.
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And don't try and tell me Pius X taught the same doctrine as Francis because we both know that is not true. In fact you going to have a hard time convincing me they are members of the same church. Yet the men on the bottom most certainly teach the same doctrine. (CFW Walter and Matthew Harrison past and current president of the LCMS).