“Beneath the arms of the cross angels gather up the blood of the martyrs, and with it they give life to the souls making their way to God. Here, the blood of Christ and the blood of the martyrs are considered as one: the blood of the martyrs runs down from the arms of the cross. The martyrs die in communion with the Passion of Christ, and their death becomes one with his. For the sake of the body of Christ, they complete what is still lacking in his afflictions (cf. Colossians 1:24). Their life has itself become a Eucharist, part of the mystery of the grain of wheat which in dying yields abundant fruit.
There is something more: from the suffering of the witnesses there comes a purifying and renewing power, because their suffering is the actualization of the suffering of Christ himself and a communication in the here and now of its saving effect.” Joseph Cardinal Ratzinger, 2000.