Furthermore, this is how the Word of God was kept from the people as the RCC gained it's foundation and the RCC continued to keep the Word of God from the people until the Reformers came along.
This is why the Catholic people are so brain-washed and don't understand when we explain what they should have been taught.
Finding common ground between Biblical Christians and Catholics is essentially untenable because the aforementioned stick to the Bible whereas Catholics do not. However, I DO believe that there are MANY Godly Catholics, including my biological father. Unfortunately, I also believe that they follow many false doctrines. Fortunately, one doesn't need to be a doctrinally correct theologian to enter God's Kingdom. One only needs to recognize Jesus as their Lord and do the will of the Father in order to enter.