what is the purpose of the ecumenical council
Ecumenical council An ecumenical council (or oecumenical council; also general council)[1] is a conference of ecclesiastical dignitaries and theological experts convened to discuss and settle matters of Church doctrine and practice in which those entitled to vote are convoked from the whole world (oikoumene) and which secures the approbation of the whole Church.[2]
Papal infallibility This doctrine was defined dogmatically at the First Ecumenical Council of the Vatican of 1869â€“1870, but had been defended before that, existing already in medieval theology and being the majority opinion at the time of the Counter-Reformation.[3]