The theologians said a synodal attitude and way of being church flowed naturally from the Second Vatican Council's description of the church as a communion and its emphasis on the responsibility of all Catholics for the church's life and mission, although each person has been given different gifts and roles by the Holy Spirit.

Many described technology as something of a necessary evil.

Pope Francis and the bishops truly want to understand what is driving young people today—that could challenge all of us.

"Finally, the church in Rome has decided to give us a platform," Nneji said.

The meeting will help the Vatican prepare for its synod on young adults in 2018.

Pope Francis, newly 81, will begin 2018 with a focus on Mary and on migrants and refugees.