Others To Catholicism Is A Mortal Sin
Proselytism is to recruit or to convert. Antipope Francis says we should never “make efforts to convert” the “Orthodox” schismatics to the Catholic faith! He even says that it is a grave sin to try to convert them to Catholicism! This is more undeniable proof that he’s a notorious heretic and not the pope of the Holy Roman Catholic Church. As we can see in this quote, Francis understands proselytism as trying to “convert” someone, and he rejects it. Indeed, Francis frequently rejects trying to “convert” non-Catholics and equates it with “proselytism”. In this case he says trying to convert (or proselytize) the schismatics is a “grave sin”.
“The Holy Roman Church firmly believes, professes and preaches that all those who are outside the Catholic Church, not only pagans but also Jews or heretics and schismatics, cannot share in eternal life and will go into the everlasting fire which was prepared for the devil and his angels, unless they are joined to the Church before the end of their lives; that the unity of this ecclesiastical body is of such importance that only for those who abide in it do the Church’s sacraments contribute to salvation and do fasts, almsgiving and other works of piety and practices of the Christian militia produce eternal rewards; and that nobody can be saved, no matter how much he has given away in alms and even if he has shed blood in the name of Christ, unless he has persevered in the bosom and unity of the Catholic Church.”
Pope Benedict XV, Ad Beatissimi Apostolorum, November 1, 1914:
"Such is the nature of Catholicism that it does not admit of more or less, but must be held as a whole or as a whole rejected: “This is the Catholic faith, which unless a man believe faithfully and firmly; he cannot be saved” (Athanas. Creed). There is no need of adding any qualifying terms to the profession of Catholicism: it is quite enough for each one to proclaim “Christian is my name and Catholic my surname,” only let him endeavour to be in reality what he calls himself."
Pope Pius IX, Apostolic Letter Iam Vos Omnes:
"Now, whoever will carefully examine and reflect upon the condition of the various religious societies, divided among themselves, and separated from the Catholic Church, which, from the days of our Lord Jesus Christ and his Apostles has never ceased to exercise, by its lawful pastors, and still continues to exercise, the divine power committed to it by this same Lord; cannot fail to satisfy himself that neither any one of these societies by itself, nor all of them together, can in any manner constitute and be that One Catholic Church which Christ our Lord built, and established, and willed should continue; and that they cannot in any way be said to be branches or parts of that Church, since they are visibly cut off from Catholic unity."
The only acceptable aim for a real Catholic Pope is to bring our separated brethren to the Roman Catholic Church and to make them realize that:
Pope Pius XI, Mortalium Animos, January 6, 1928:
““That unity can only arise from one teaching authority, one law of belief and one faith of Christians. . .So, Venerable Brethren, it is clear why this Apostolic See has never allowed its subjects to take part in the assemblies of non-Catholics: for the union of Christians can only be promoted by promoting the return to the one true Church of Christ of those who are separated from it, for in the past they have unhappily left it...Let these separated children return to the Apostolic See established in this city which the Princes of the Apostles, Peter and Paul, consecrated with their blood, to this See, ‘the root and matrix of the Catholic Church,’ not indeed with the idea or hope that the Church of the living God, the pillar and ground of truth will abandon the integrity of the Faith and bear their errors, but to subject themselves to its teaching authority and rule. For since the mystical body of Christ, in the same manner as His physical body, is one, compacted and fitly joined together, it were foolish and out of place to say that the mystical body is made up of members which are disunited and scattered abroad: whosoever therefore is not united with the body is no member of it, neither is he in communion with Christ its head.”