Keys Over the Christian World, the Evidence for Papal Authority, 33 80, 88 Hundred a D

i would say you have primacy in the old testament background for matthew 16. You also have succession implied in the notion of the keys of the kingdom. And you have infallibility implied when you hear jesus say, on this rock, i will build my church. So christ is the head king through fallible instruments. But we already know that christ can send the holy spirit down to infallible men like peter, matthew, mark, luke and john. The conquest now is to make disciples of all nations, not just a tiny slice of turf the size of new jersey palestine.