What is Roman Catholicism?

The Roman Catholic Church presents itself as the one true Church established by Jesus, and claims that Peter was set up as the supreme Apostle, or "the rock", upon whom that Church was built. The current leader of the Roman Catholic Church, called the Pope, is allegedly Peter's successor, and is therefore the "visible head" of the Roman Catholic Church. A defining feature of Roman Catholicism, though by no means one unique to their Church, is that Scripture and "sacred tradition" are said to be the two lungs of the faith. In theory, this means the two are to be revered equally, as Scripture is the word of God, but tradition, they allege, was handed down from the Apostles themselves. In practice, the Roman Catholic Church becomes the Christian version of the Pharisees. That is, both sects lay aside the word of God so they may keep their traditions.
 

What is Protestantism?

Protestantism is a term given to a wide range of Christian traditions that are separate from the Roman Catholic Church. Occasionally, the term is applied to Orthodoxy, but it is typically applied to Churches that affirm principles which were emphasised during a movement called "the Reformation". Some of these principles are called "the 5 Solas", which are Sola Scriptura, Sola Christus, Sola Gratia, Sola Fide, and Sola Deo Gloria. Although Bible Brain is technically a "Protestant" ministry, we reject the term, simply because a Church should be defined by what it affirms, not what it denies. We don't call ourselves atheists for rejecting Allah, and there is no name for rejecting any other Church. We therefore feel the term "Protestant" gives Roman Catholicism far more credibility than it deserves, whereas the Bible, and therefore the doctrines preached within it, have existed since before there was ever a Catholic Church to protest. For this reason, while we are technically a "Protestant" ministry, we officially reject the term, and use it (in air quotes) only because it is the common vernacular.

Due to both its importance to the Christian faith, and the wider number of denominations rejecting it, Sola Scriptura has its own section on this site.