I have always believed in the papal infallibility. I came across an article about "Amoris laetitia". It is an extract of a commentary by Mgr Athanasius Schneiderthe. He speaks of the arian crisis that took place in the 4th century:
At that time, the apostolic and traditional faith in the true divinity of the Son of God was secured by means of the term ‘consubstantial’ (‘homoousios’), dogmatically proclaimed by the universal Magisterium of the Council of Nicaea I (this a quote from As Bishop Schneider)
The profound crisis of faith, with a quasi-universal confusion, was caused principally by refusing, avoiding the use and profession of the word “consubstantial” (homoousios). Instead of using this expression, there was spread about among the clergy and above all the episcopate the use of an alternative formulae which in fine were ambiguous and imprecise, as for example, “similar in substance” (homoiousios) or simply “similar” (homoios). The formula, “homoousios” of the universal Magisterium of that time expressed the full and true Divinity of the Word in such a clear manner as to not leave space for equivocal interpretations.
In the years, 357-360 (A.D.), nearly the entire episcopate had become Arian or semi-Arian on account of the following events: in 357 Pope Liberius signed one of the ambiguous formulae of (the Council of) Sirmium, in which the term “homoousious” had been eliminated. Moreover, the Pope excommunicated in a scandalous way St. Athanasius.
St. Hilary of Poiters was the only Bishop to undertake grave remonstrations with Pope Liberius for such ambiguous acts. In 359, the parallel Synods of the western episcopacy at Rimini (Italy) and that of the eastern at Seuleukia, accepted expressions which were completely Arian, worse than the ambiguous formula signed by Pope Liberius. Describing the situation of confusion in that epoch, St. Jerome expressed himself thus: « The world groaned and found itself, with shock, to have become Arian » (« Ingemuit totus orbis, et arianum se esse miratus est »: Adversus Luciferianum, 19)
When I read what the Pope Liberius did, it seems to contradict the infallibility dogma? Can you help me see how it does not?
(article can be found here https://vericatholici.wordpress.com/...oris-laetitia/