"merging of Catholicism with the Roman Babylonian Brotherhood"
May I ask for your source on that?
It's just simple history. Rome needed the church on it's side for the inquisition. The Roman Brotherhood merged with the Catholic church to "fight for God". The Church became the ROMAN Catholic Church.
The "modern" Babylonian Brotherhood (as far as I know) has nothing to do with the Catholic Church today, but back then the merge was necessary for Rome to win a war. Many of the rituals were incorporated into the Church, and are still used today.
Don't know where that one came from (Roman Babylonian Brotherhood). But I'm sure it would be interesting to research....