Before going to the Garden of Gethsemane on Holy Thursday evening, Christ prayed for the unity of all Christians. His prayer was more than a devout wish; it was a command for those of us who would follow Him.
In this prayer, we join with Christ in praying for that unity which is expressed in the Latin phrase Ubi Petrus, ibi ecclesia: Where Peter is, there is the Church.
A Devout Exercise for the Unity of the Church
Ant. That they all may be one, as Thou, Father, in me and I in Thee, that they also may be one in us; that the world may believe that Thou hast sent me.
V. I say to thee, that thou art Peter.
R. And upon this rock I will build my Church.
Let us pray.
Lord Jesus Christ, Who didst say to Thine Apostles; peace I leave with you, my peace I give unto you, look not upon my sins, but upon the faith of Thy Church; and vouchsafe unto her that peace and unity which is agreeable to Thy will: Who livest and reignest God forever and ever. Amen.