Hello, I recently had a discussion with my nephew, who has different views than me about the Magesterium. I would like to know how one answers these texts: (he sent this)
 
    I'll answer it. Doctrine is taught and explained to the faithful through the universal ordinary magisterium. Since doctrine is taught to Catholics in this manner, it cannot ever be false. Therefore, not only the solemn magisterium, but also the ordinary magisterium is infallible on matters of faith and morals. This is important, because the Church has defined no salvation outside the Catholic Church, but this, as with all other doctrines, must be understood in the manner taught by the ordinary magisterium of the Church. 

From what I understand the First Vatican Council defined that the Pope is only infallible when he invokes "Ex Cathedra" and binds the whole Church saying "We define, declare.. etc" and he will usually say something like "May anyone who contradicts this feel the wrath of Saint Peter and Paul!" Or "if anyone says anything against this let him be anathema."

Now...  According to the First Vatican Council it explained that "the ordinary magesterium of the Church" though not always infallible is always "safe to follow".   In other words, the True Church and a True Pope can never teach error already condemned officially as heresy by another Pope in the past.

Does that help at all?

Sorry I don't have all the sources on me right now.  But, I think the First Vatican Council itself explains all this in it's canons and Decrees.  😇

Hello, I recently had a discussion with my nephew, who has different views than me about the Magesterium. I would like to know how one answers these texts: (he sent this)
 
    I'll answer it. Doctrine is taught and explained to the faithful through the universal ordinary magisterium. Since doctrine is taught to Catholics in this manner, it cannot ever be false. Therefore, not only the solemn magisterium, but also the ordinary magisterium is infallible on matters of faith and morals. This is important, because the Church has defined no salvation outside the Catholic Church, but this, as with all other doctrines, must be understood in the manner taught by the ordinary magisterium of the Church. 

Your nephew is correct

Why do we have defined dogmas if the ordinary magisterium has just as much say as the Pope's teachings. Should there not be a final say? Is that not how Christ set up his Church?

The ordinary magisterium is synonymous with the Pope's teachings and Tradition. The Pope can only define what is already in Tradition, and these definitions make their way into the ordinary magisterium once they are taught universally to the Church. Therefore, the Pope does get the "final say" in accord with how Christ set up His Church.

VI taught that the Ordinary UNIVERSAL Magisterium is infallible when it teaches something as "divinely revealed".  Those pieces are usually left out by the dogmatic SV types who exaggerate the scope of infallibility (as a counter-reaction to those in R&R who excessively minimize it).  As is most often the case, veritas in media stat ... "truth is in the middle".

With regard to the OUM, we read from Catholic Encyclopedia:

And while for subsequent ages down to our own day it continues to be theoretically true that the Church may, by the exercise of this ordinary teaching authority arrive at a final and infallible decision regarding doctrinal questions, it is true at the same time that in practice it may be impossible to prove conclusively that such unanimity as may exist has a strictly definitive value in any particular case, unless it has been embodied in a decree of an ecuмenical council, or in the ex cathedra teaching of the pope, or, at least, in some definite formula such as the Athanasian Creed. Hence, for practical purposes and in so far as the special question of infallibility is concerned, we may neglect the so called magisterium ordinarium ("ordinary magisterium") and confine our attention to ecuмenical councils and the pope.

This is from Canon 1323 of the 1917 Code of Canon Law:

All of those things are to be believed with a divine and Catholic faith that are contained in the written word of God or in tradition and that the Church proposes as worthy of belief, as divinely revealed, whether by solemn judgment or by her ordinary and universal magisterium