Truth About Roman Catholicism

Catholic popes and Vatican councils have pronounced many teachings which, they say, are necessary to believe, such as:

It is necessary for salvation to submit to the Roman Pontiff.
Christians must keep the law and do good works to be saved.
Anyone who says they are certain they are saved and going to heaven is anathema (cursed, damned as a heretic).
Mary was immaculately conceived, remained a virgin h...