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Just some more false ecumenism.

"Ecumenism of Blood" is a reference to martyrdom. The Churches are getting closer to reconciliation. We should pray for unity, since Christ desired that we all be one.

"I do not ask on behalf of these alone, but for those also who believe in Me through their word; that they may all be one; even as You, Father, are in Me and I in You, that they also may be in Us, so that the world may believe that You sent Me. "The glory which You have given Me I have given to them, that they may be one, just as We are one;… (John 17:20-22)
"There is one body and one Spirit, just as also you were called in one hope of your calling; one Lord, one faith, one baptism, one God and Father of all who is over all and through all and in all.…" (Ephesians 4:4-6)

Historic Meeting between Pope Francis and Coptic Patriarch, Tawadros II, Fosters Christian Unity

This council firmly believes, professes, and proclaims that those not living within the Catholic Church, not only pagans, but also Jews and heretics and schismatics cannot become participants in eternal life, but will depart "into everlasting fire which was prepared for the devil and his angels" [Matt. 25:41], unless before the end of life the same have been added to the flock; and that the unity of the ecclesiastical body is so strong that only to those remaining in it are the sacraments of the Church of benefit for salvation, and do fastings, almsgiving, and other functions of piety and exercises of Christian service produce eternal reward, and that no one, whatever almsgiving he has practiced, even if he has shed blood for the name of Christ, can be saved, unless he has remained in the bosom and unity of the Catholic Church.

(Council of Florence, Decree Cantate Domino)