Hi Nikki… There are others here that will be able to go into great detail of the pre-reformation history, but I think I can give you a brief overview.
The Catholic Church was started when Jesus started it in 33 ad. We know he came to build his church and not to just give us a Bible because he said so. There are some very important Bible verses about this…
First there is establishing the church:
Matthew 16:18* And I say to thee: That thou art Peter; and upon this rock I will build my church, and the gates of hell shall not prevail against it.
*So… Jesus established the Church…
Next you will want to know about the commissioning…
Jesus told them to expect it…
*Acts 1:**8 But you shall receive the power of the Holy Ghost coming upon you, and you shall be witnesses unto me in Jerusalem, and in all Judea, and Samaria, and even to the uttermost part of the earth.
*Then they did and were made apostles… which means sent forth…
*Acts 2:**1 And when the days of the Pentecost were accomplished, they were all together in one place: **2 And suddenly there came a sound from heaven, as of a mighty wind coming, and it filled the whole house where they were sitting. **3 And there appeared to them parted tongues as it were of fire, and it sat upon every one of them: **4 And they were all filled with the Holy Ghost, and they began to speak with divers tongues, according as the Holy Ghost gave them to speak. **5 Now there were dwelling at Jerusalem, Jews, devout men, out of every nation under heaven.
*And so the apostles were sent forth to bring the Good News to the world. You might be asking what this has to do with the Catholic Church… well everything! Let me explain… the word Catholic means universal… and the first time it was used as a descriptor or name for the church some people say is 110ad but others point to the Bible… parts of which were originally written in Greek, where the word Katholicos or Catholic comes from. There are verses which do use that word, whether or not it was meant as a title or name… it became the name to describe Christians. The apostles did teach others and passed the faith on through evangelization and the laying on of hands. After the apostles were all gone, we have the Early Church Fathers. Most of these are the men who were actually taught by the apostles. They wrote tons of stuff which is great to read. If you read them, you will find that they are pretty much describing the Catholic Church. Eventually the name stuck… but there wasn’t really a need for a name until the reformation when Luther broke away from the Church. True there was the Orthodox, but they are still in communion with the beliefs we hold, they aren’t totally separated from us… but that is a totally different story.
Over the first 10 centuries there were heresies… or incorrect teachings… this is where my knowledge is not great. Anyway, you can look some of them up.
About the time of Martin Luther, there were some local problems. Some of the priests were selling indulgences to raise money… it was never condoned by the pope or the Church as a whole. Now, the one thing you have to understand is that it isn’t like today where we have mass communications, printing presses, and all our modern conveniences… but there is another thing many people don’t take into account as well… there was disease and as a result we had lost alot of priests… and there was extreme poverty…nothing new there, but it made bibles very rare. This is why we have stained glass and many other forms of spiritual art… to tell the story we were all meant to hear. Anyway, after the plagues there were very poorly catechized priests… doing their best… but nonetheless, doing wrong… Martin started out on the right path, telling his higher ups what was going on, but unfortunately, some didn’t disagree with the corruption… in fact they profited from it. By the time the Vatican had heard of his complaints, ML had already become angry and bitter, and the bishops had kind of ruined his reputation to the Vatican.
Anyway, long story short, ML started the reformation and that is where all the Protestant churches have split from…