Cardinals entered St. Peter’s Basilica on Wednesday for a final Mass before the conclave to elect the successor to Pope Francis after his death last month.

The cardinals began the day by participating in a final pre-conclave Mass in St. Peter’s Basilica. The dean of the College of Cardinals, Giovanni Battista Re, celebrated the Mass, which is meant to pray for cardinals to find the wisdom, counsel and understanding to elect a worthy new shepherd.

Roman Catholic cardinals will begin the task of electing a new pope, locking themselves away from the world until they choose the man they hope can unite a diverse but divided global Church.