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#4
7-2-13
15 major heresies and the people who fought them...
7-2-13

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.
1. Pelagianism and St. Augustine of Hippo
"There is an opinion that calls for sharp and vehement resistance - I mean the belief that the power of the human will can of itself, without the help of God, either achieve perfect righteousness or advance steadily towards it."1
Pelagianism radically corrupted the Church's teachings on grace, sin, and the Fall. Its namesake, the British monk Pelagius (who was startled by some of the words of St. Augustine in his Confessions), taught that the sin of Adam had no bearing on subsequent generations; essentially, man was inherently good and unaffected by the Fall. In practice, this meant that a man could come to God by his own free will, no grace needed. Many saints fought against this doctrine - St. David of Wales stands out among them especially - but it was St. Augustine of Hippo, arguably the greatest of the Latin Doctors and "the Church's mightiest champion against heresy"2, who rose to fight against this inherently venomous strand of thought.
Against Pelagius, St. Augustine upheld the truth that God's grace is entirely necessary for any movement of ours towards God to occur at all. As he himself puts it, "We for our part assert that the human will is so divinely aided towards the doing of righteousness that, besides being created with the free choice of his will, and besides the teaching which instructs him how he ought to live, he receives also the Holy Spirit, through which there arises in his heart a delight in and love of that supreme and unchangeable Good which is God; and this arises even now, while he still walks by faith and not by sight."3
2. Gnosticism and St. Irenaeus of Lyons
15 major heresies and the people who fought them...