The Catholic Church acknowledges both Sacred Scripture and Sacred Tradition. However, many people may confuse Sacred Tradition with traditions made by men, and therefore may claim that the Catholic Church "invented" new theological in the Middle Ages that aren't Biblical.

 

Sacred Traditions and teachings in the Catholic Church were established by either Christ, His apostles or the Holy Catholic Church that was given the authority by Christ. Many of the Church Fathers speak of different kinds of Sacred teachings, which meant most of these teachings were already practised in the Early Church.

Sacred Tradition is the faithful handing down of teachings and traditions (such as baptism, the Eucharist, reciting the Our Father Prayer, etc.).

 

We need Sacred Tradition, even now, to give light to what the Apostles taught and how the earliest Christians worshipped. (see 1 Corinthians 11:2, 2 Thessalonians 2:15). Sacred Tradition and Sacred Scripture go hand in hand in being "rules of faith". The New Testament was written around 2,000 years ago; the language, situations through time have changed.

 

You who are reading this may think. "agreed, but now since we have the Bible, we don't need the traditions anymore." Whilst I understand this viewpoint to an extent, we must remember that some traditions live in our faith if we know it or not. We would not celebrate Christmas or Easter when we do, as the Bible does not mention exactly what date Christ was born. We wouldn't believe in the Trinity, and of course, we wouldn't know where the Bible (as a book) came from if we refuse to go by Tradition. Also, we would have to automatically believe in the Church's authority, as it is mentioned in the Bible.

The Catholic teachings on traditions, repetitive prayer, sacraments, etc., is a way to grow us in our faith in Christ, help us know Christ better and put into action the commandments that Jesus gave to us. 

"Now, there are many other things that Jesus did. If they were all written down one by one, I suppose that the whole world could not hold the books that would be written." (John 21:25).