Do you believe that one group of apostles mentioned in the Bible were the "one true group of apostles" chosen by God at that time?
If so, did that "one true group of apostles" include an evil man named "Judas Iscariot"?
When the other 11 apostles chose "Matthias" to replace "Judas Iscariot", was that newly updated group of 12 apostles the "one true group of apostles" (as viewed by God) at that point in time?
(This has absolutely NOTHING to do with trying to get the glory for being the conduit which God chose to give us His Sacred Scriptures. Rather, it has EVERYTHING to do with trying to find the TRUTH about the Church that Jesus Christ gave His most solemn word He would build.)
BTW The eleven apostles didnt select Matthias, God did.
Acts 1:24 And they prayed, and said, Thou, Lord, which knowest the hearts of all men, shew whether of these two thou hast chosen, 25 That he may take part of this ministry and apostleship, from which Judas by transgression fell, that he might go to his own place. 26 And they gave forth their lots; and the lot fell upon Matthias; and he was numbered with the eleven apostles.
Now, as far as the church Jesus promised. He did indeed establish a church. It was NOT the RCC. Anyone who honestly compares the teaching of the RCC with scripture understands that the RCC is often in contradiction to scripture.