"But for Pope Francis, the peripheries are more than a physical location or a social category. They are places where poverty is not only material but also spiritual," he said.

The archbishop called such locations places where people "are wounded and feel their life has no meaning and makes no difference," trapping themselves in sin, addiction, slavery and self-deception.

"The pope is saying these peripheries are growing in the modern world and these peripheries are new mission territory," he explained.

Archbishop Gomez, vice president of the U.S. Conference of Catholic Bishops, admitted some of these places are "where the church does not like to go, where we do not like to go." Yet, he reminded the 3,500 delegates, Jesus is at the margins, and that as people of faith, they are invited to go where Jesus exists.

"The church has always been present in the peripheries, through our schools, our parishes and our ministries. Sometimes we are the only ones serving these communities. But we can do better, we are called to do more. That is our challenge," Archbishop Gomez said.

He also blamed "elites" for undertaking an "aggressive 'de-Christianization' of our society" to cause people to "'un-remember' our Christian roots and deconstruct everything that was built on these roots."

"With the loss of God, we are witnessing the loss of the human person," he said.

Archbishop Gomez pointed to American society as a prime example of where the need to minister on the margins is vital, especially because families are breaking down and communities are experiencing instability.

"This is one of the lessons from the last election, wasn't it? America is pulling apart. We are a people divided along lines of money and race, education and family backgrounds. People are afraid of the future. They feel powerless and excluded," he told the convocation.

The archbishop urged that such concerns be addressed by the church and the faithful, through being a presence to those in need to help bridge the widening gaps between people.

The answer to such concerns rests with imitating Jesus and meeting people at the "places of pain and injustice, to the places where people forgotten and along."

"Siempre adelante," he said in Spanish. "Always forward."

Carl Anderson, supreme knight of the Knights of Columbus, in an address opening the plenary session, suggested to the delegates that if they "go deep enough into the peripheries, we will see the boundaries between us disappear."

He said Pope Francis and his predecessors, Pope Benedict XVI and St. John Paul II, have urged action for society's forgotten communities. He suggested marginalized people can be as close as the person next door.

Pope Francis asks the church to reach out "in joy in a permanent state of mission," Anderson said. "This great task is for each of us."

A panel discussion during the same session addressed several examples of the church working in the peripheries of the world including ministry with African-American Catholics; the work of Catholic Relief Services in more than 160 countries; care for immigrants along the border in the Rio Grande Valley in the Diocese of Brownsville, Texas; ministry to people with same-sex attraction; and the use of social media as a tool to reach youth and young adults.

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Follow Sadowski on Twitter: @DennisSadowski.