We read about the life of St.Theodosius in Butler's Lives of the Saints as well as the martyrology today.

You can read his amazing life and his persecution at the hand of the Eutychian heretics, if you like. You can also read about the foundations and repercussions of the Eutychian heresy today. In doing so, I came across a joint declaration between Montini (Paul VI) and "Pope" Shenouda III who is the head of a schismatic and heretical sect.

http://www.vatican.va/roman_curia/pontifical_councils/chrstuni/anc-orient-ch-docs/rc_pc_christuni_doc_19730510_copti_en.html

Here Montini rejects and implicitly denies the mission of the Church, the declaration also talks about Charity but it is a resolution to not practice charity:

In the name of this charity, we reject all forms of proselytism, in the sense of acts by which persons seek to disturb each other's communities by recruiting new members from each other through methods, or because of attitudes of mind, which are opposed to the exigencies of Christian love or to what should characterize the relationships between Churches. Let it cease, where it may exist. Catholics and Orthodox should strive to deepen charity and cultivate mutual consultation, reflection and cooperation in the social and intellectual fields and should humble themselves before God, supplicating Him who, as He has begun this work in us, will bring it to fruition.

Anyways, I thought this was interesting because it relates to our time and we often think of Montini's other heresies.

Ah, the forerunner of "proselytism-is-solemn-nonsense"-Francis.

Which in turn is predicated upon Cushing's "No salvation outside the Church? Nonsense."