On the Unity of Christians

I, then, a prisoner for the Lord, urge you to live in a manner worthy of the call you have received, with all humility and gentleness, with patience, bearing with one another through love, 3striving to preserve the unity of the spirit through the bond of peace: one body and one Spirit, as you were also called to the one hope of your call; one Lord, one faith, one baptism; one God and Father of all, who is over all and through all and in all.--Ephesians 4:1-6

John Paul II (soon to be canonized a saint) reiterated the Gospel call for the unity of Christians in his encyclical letter Ut Unum Sint. Excerpts:

Ut unum sint! (May they be one)...The courageous witness of so many martyrs of our century, including members of Churches and Ecclesial Communities not in full communion with the Catholic Church, gives new vigour to the Council's call and reminds us of our duty to listen to and put into practice its exhortation. These brothers and sisters of ours, united in the selfless offering of their lives for the Kingdom of God, are the most powerful proof that every factor of division can be transcended and overcome in the total gift of self for the sake of the Gospel.

Christ calls all his disciples to unity. My earnest desire is to renew this call today, to propose it once more with determination, repeating what I said at the Roman Colosseum on Good Friday 1994, at the end of the meditation on the Via Crucis prepared by my Venerable Brother Bartholomew, the Ecumenical Patriarch of Constantinople. There I stated that believers in Christ, united in following in the footsteps of the martyrs, cannot remain divided. If they wish truly and effectively to oppose the world's tendency to reduce to powerlessness the Mystery of Redemption, they must profess together the same truth about the Cross.1 The Cross! An anti-Christian outlook seeks to minimize the Cross, to empty it of its meaning, and to deny that in it man has the source of his new life. It claims that the Cross is unable to provide either vision or hope. Man, it says, is nothing but an earthly being, who must live as if God did not exist.

And Pope Francis had some rather poignant words to speak on the same subject. Excerpts:

...Is Christian unity a priority for you?

Pope Francis: Yes, for me ecumenism is a priority. Today there is an ecumenism of blood. In some countries they kill Christians for wearing a cross or having a Bible and before they kill them they do not ask them whether they are Anglican, Lutheran, Catholic or Orthodox. Their blood is mixed. To those who kill we are Christians. We are united in blood, even though we have not yet managed to take necessary steps towards unity between us and perhaps the time has not yet come. Unity is a gift that we need to ask for.

I knew a parish priest in Hamburg who was dealing with the beatification cause of a Catholic priest guillotined by the Nazis for teaching children the catechism.  After him, in the list of condemned individuals, was a Lutheran pastor who was killed for the same reason. Their blood was mixed. The parish priest told me he had gone to the bishop and said to him: "I will continue to deal with the cause, but both of their causes, not just the Catholic priest's." This is what ecumenism of blood is. It still exists today; you just need to read the newspapers. Those who kill Christians don't ask for your identity card to see which Church you were baptized in. We need to take these facts into consideration...

The martyrs, the greatest Christian witnesses to the faith and the truth of the Incarnation of Jesus Christ, the Son of God made man, challenge their brethren, separated and divided in the face of tremendous challenges from the world, the flesh, and the devil these days. The blood of the martyrs is the seed of the Church, as Tertullian wrote, and perhaps also the bond of charity which holds the whole together, mediating the Holy Spirit, opening a door through their sacrifice as Jesus did.