French Cardinal Christophe Pierre, 79, has worked the past 48 years in the Vatican’s diplomatic service, most recently as papal nuncio to the United States for the past nine years.

Although not a familiar name in the U.S. press, Hungarian Cardinal Péter Erdo of Esztergom-Budapest, 72, is a major figure among his peers in Europe, the church’s traditional heartland and the region of about 38.5% of the cardinal electors.

As the Catholic Church’s cardinals prepare to elect a new pope, they must be wary of “elegant speeches” that hide a subtle cruelty toward the poor and vulnerable, said the Vatican’s former doctrinal chief.

The challenge of leading a Catholic flock of 1.4 billion, from that moment on, will be on his shoulders. From theologians to Vatican insiders, there’s agreement that the next pontiff must balance deep faith with sharp governance.

As cardinals gather in Rome ahead of the May 7 conclave, thousands of pilgrims are flocking to the Basilica of St. Denis in Argenteuil, France, to venerate what’s believed to be the holy tunic of Jesus — the seamless robe described in the Gospels.