Vatican City, Jan 25, 2015 / 03:37 pm (CNA/EWTN News).- More than “theoretical discussions,” what unites Christians is encounter, and a willingness to “challenge one another,” said Pope Francis as he marked the conclusion of the Week of Prayer for Christian Unity.

“Christian unity will not be the fruit of subtle theoretical discussions in which each party tries to convince the other of the soundness of their opinions,” the Pope said during vespers at Saint Paul Outside the Walls Basilica on Jan. 25.