Hi Hannah! I’ll sum it up as best as I can in my words… I did some research on St. Peter and Paul and took a couple of bible study classes on it. You might want to watch the Catholicism video by Fr. Barron one of the discs are on St Peter and Paul.
catholicismseries.com/news/reviews-articles/father-barrons-catholicism
It was Jesus who started the church when He picked Simon who He named Peter (because Peter means Rock) to build the church upon because of his faith and because of his great love for Jesus. We see here Jesus is calling the church His church.
Read the whole Chapter 16 of Matthew and you’ll see what your grandma was talking about… Particularly Matthew 16:17…
Matthew 16:18 And I tell you, you are Peter, and on this rock I will build
my church, and the gates of Hades will not prevail against it.
John 21:17 The third time he said to him, “Simon son of John, do you love me?”
Peter was hurt because Jesus asked him the third time, “Do you love me?” He said, “Lord, you know all things; you know that I love you.”
Jesus said, “Feed my sheep.
Read closely in scripture and you will see Peter leading the church…Now remember this is the beginnings, and Christians were under great persecution so things like what we should call the leader of the church “pope” didn’t come till later, but for sure. Jesus picked only one of the apostles to head it as the Pope does, and in apostolic tradition, more Main leaders came to follow to replace Peter as well as others to replace the other apostles who were leaders but not the top leader like Peter. Read the scriptures in order starting from the Acts of the Apostles and you’ll see the beginnings of the church developing.
Acts 1: 15 In those days Peter stood up among the believers (a group numbering about a hundred and twenty)
Acts 2:14
Peter Addresses the Crowd ] Then Peter stood up with the Eleven, raised his voice and addressed the crowd: “Fellow Jews and all of you who live in Jerusalem, let me explain this to you; listen carefully to what I say.
Peter instructs the other leaders.
1 Peter 5:1 So I exhort the presbyters* among you, as a fellow presbyter and witness to the sufferings of Christ and one who has a share in the glory to be revealed.
2
Tend the flock of God in your midst, [overseeing] not by constraint but willingly, as God would have it, not for shameful profit but eagerly.a
3
Do not lord it over those assigned to you, but be examples to the flock.
The church grew…
Acts 4:4 But many who heard the message believed; so the number of men who believed grew to about five thousand.
Acts 9:11 Then the church throughout Judea, Galilee and Samaria enjoyed a time of peace and was strengthened. Living in the fear of the Lord and encouraged by the Holy Spirit, it increased in numbers.
The church existed 300+ of years before the bible even existed. The bible was the work of the church completed after Christianity was made legal, so all the details are not included in the bible. Refer to :. 2 Timothy 3:16 All Scripture is God-breathed and is
useful for teaching, rebuking, correcting and training in righteousness, the bible is useful, but by that statement we know that it doesn’t contain everything we need to know about our faith. What they needed to know was the Church teaching and the bible Supported that hand in hand and still does… The bible wasn’t the sole source of the teaching for Christians, and still isn’t for Catholics. We have the magisterium which teaches us what the scriptures mean and about our faith. That’s why we have to look at the traditions of the church to fully understand about our beliefs.
IN the first 1500 years of Christianity there were no other Christian religions outside of the Catholic church, so Christianity WAS the Catholic church. So although your grandmother might not see the details like Peter being called the Pope, at the time the bible was written these details didn’t matter, there was only one Christian church and that came to be named later as the Catholic church. Remember the first 300 years of Christianity, it was not legal to be Christian but all Christians were united in their beliefs, which were the frameworks for our beliefs.
Peace… Karen