"The first and fundamental mission that we receive from the sacred mysteries we celebrate is that of bearing witness by our lives. The wonder we experience at the gift God has made to us in Christ gives new impulse to our lives and commits us to becoming witnesses of his love. We become witnesses when, through our actions, words and way of being, Another makes himself present. Witness could be described as the means by which the truth of God's love comes to men and women in history, inviting them to accept freely this radical newness. Through witness, God lays himself open, one might say, to the risk of human freedom. Jesus himself is the faithful and true witness (cf. Rev 1:5; 3:14), the one who came to testify to the truth (cf. Jn 18:37). Here I would like to reflect on a notion dear to the early Christians, which also speaks eloquently to us today: namely, witness even to the offering of one's own life, to the point of martyrdom. Throughout the history of the Church, this has always been seen as the culmination of the new spiritual worship: "Offer your bodies" (Rom 12:1). One thinks, for example, of the account of the martyrdom of Saint Polycarp of Smyrna, a disciple of Saint John: the entire drama is described as a liturgy, with the martyr himself becoming Eucharist. We might also recall the eucharistic imagery with which Saint Ignatius of Antioch describes his own imminent martyrdom: he sees himself as "God's wheat" and desires to become in martyrdom "Christ's pure bread." The Christian who offers his life in martyrdom enters into full communion with the Pasch of Jesus Christ and thus becomes Eucharist with him. Today too, the Church does not lack martyrs who offer the supreme witness to God's love. Even if the test of martyrdom is not asked of us, we know that worship pleasing to God demands that we should be inwardly prepared for it. Such worship culminates in the joyful and convincing testimony of a consistent Christian life, wherever the Lord calls us to be his witnesses."
-Pope Benedict XVI in his Apostolic Exhortation Sacramentum Caritatis.