Leo the Great

Indeed consequently, “Christ our Passover has been sacrificed,” as the apostle says. Offering himself to the Father as a new and real sacrifice of reconciliation, he was crucified—not in the temple whose due worship is now completed, nor within the enclosure of the city which was to be destroyed because of its crime, but “outside and beyond the camp.” That way, as the mystery of the ancient sacrifices was ceasing, a new victim would be put on a new altar, and the cross of Christ would be the altar not of the temple but of the world.