Concern for migrants and refugees, many of who are young, took center stage at the Synod of Bishops.

The most powerful speeches were given by synod fathers from countries that produce migrants due to situations of war or poverty.

The pope stresses hope, dialogue and discernment in opening address to the synod on young adults.

Describing this synod as a “moment of grace for the whole church,” Pope Francis prayed that the Holy Spirit “may help us to preserve the memory of the Lord.”

The Synod of Bishops on young people opens on Wednesday, and for the first time in history, two bishops from mainland China will be in attendance.

The pope’s appeal to Catholics comes at a moment of great turbulence in his five-year pontificate.