This work deserves to be re-blogged, and so it is….
The history of the Catholic Church is full of all sorts of heresies that have assailed the truths of the faith. From the earliest days of the Gnostics and Docetists all the way down to the Jansenists and Quietists of later centuries, it seems there has never been a shortage of heretical thought.
But in each age, God has brought forth great members of the faithful to combat each one. Each one gave their life in service to Christ and His Church in their own way, either as martyrs, confessors, or simply as servants to others for the sake of the love of Jesus.
The following is a list of fifteen of the major heresies that the Church has faced, and the illustrious persons who stood against them.