Any Catholic who wishes to understand why Pope John Paul II’s statement repudiating “every form of proselytism” is erroneous and scandalous should study the closing sections of Pope Pius XI’s encyclical
Mortalium animos. I am transcribing sections 10, 11, and 13 from the Vatican’s Web site:
***“10. 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. To the one true Church of Christ, we say, which is visible to all, and which is to remain, according to the will of its Author, exactly the same as He instituted it. During the lapse of centuries, the mystical Spouse of Christ has never been contaminated, nor can she ever in the future be contaminated, as Cyprian bears witness: ‘The Bride of Christ cannot be made false to her Spouse: she is incorrupt and modest. She knows but one dwelling, she guards the sanctity of the nuptial chamber chastely and modestly.’[20] The same holy Martyr with good reason marveled exceedingly that anyone could believe that ‘this unity in the Church which arises from a divine foundation, and which is knit together by heavenly sacraments, could be rent and torn asunder by the force of contrary wills.’[21] For since the mystical body of Christ, in the same manner as His physical body, is one,[22] compacted and fitly joined together,[23] 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.[24] ***
***“11. Furthermore, in this one Church of Christ no man can be or remain who does not accept, recognize and obey the authority and supremacy of Peter and his legitimate successors. Did not the ancestors of those who are now entangled in the errors of Photius and the reformers, obey the Bishop of Rome, the chief shepherd of souls? Alas their children left the home of their fathers, but it did not fall to the ground and perish for ever, for it was supported by God. Let them therefore return to their common Father, who, forgetting the insults previously heaped on the Apostolic See, will receive them in the most loving fashion. For if, as they continually state, they long to be united with Us and ours, why do they not hasten to enter the Church, ‘the Mother and mistress of all Christ’s faithful’[25] Let them hear Lactantius crying out: ‘The Catholic Church is alone in keeping the true worship. This is the fount of truth, this the house of Faith, this the temple of God: if any man enter not here, or if any man go forth from it, he is a stranger to the hope of life and salvation. Let none delude himself with obstinate wrangling. For life and salvation are here concerned, which will be lost and entirely destroyed, unless their interests are carefully and assiduously kept in mind.’[26]” ***
. . .]
***“13. You, Venerable Brethren, understand how much this question is in Our mind, and We desire that Our children should also know, not only those who belong to the Catholic community, but also those who are separated from Us: if these latter humbly beg light from heaven, there is no doubt but that they will recognize the one true Church of Jesus Christ and will, at last, enter it, being united with us in perfect charity. While awaiting this event, and as a pledge of Our paternal good will, We impart most lovingly to you, Venerable Brethren, and to your clergy and people, the apostolic benediction.” ***
Section 12 has been omitted merely to comply with the forum’s word limit for one post. That section does not change the obvious import of the transcribed sections. By all means, however, please read section 12 on the Vatican’s Web site. Indeed, please read the entire encyclical:
vatican.va/holy_father/pius_xi/encyclicals/documents/hf_p-xi_enc_19280106_mortalium-animos_en.html
Keep and spread the Faith.