Pope Leo XIV has urged the U.S. chapter of the international Pax Christi movement to move in “the peripheries” of society to spread peace and forgiveness there.

The pope issued the message to the national Pax Christi USA assembly taking place in Detroit. The group says the July 25–27 gathering is an opportunity for participants to renew their “commitment to peacemaking and care for the Earth and all its inhabitants.”

Writing to the gathering, Pope Leo said: “In the midst of the many challenges facing our world at this time, including widespread armed conflict, division among peoples, and the challenges of forced migration, efforts to promote nonviolence are all the more necessary.”

Leo noted that, following the “violence of the Crucifixion,” the risen Christ greeted his apostles with peace, one that was “unarmed and disarming, humble and persevering.”

Christ continues to charge his followers with spreading his peace, Leo wrote.

“In parishes, neighborhoods, and especially on the peripheries, it is all the more important for a Church capable of reconciliation to be present and visible,” he said.

The pontiff prayed that the gathering would inspire the event’s participants to “work to make their local communities” into “houses of peace” that spread justice and forgiveness.

Pax Christi was founded in 1945 near the end of World War II and was recognized by Pope Pius XII in 1952. Its U.S. arm was founded in 1972.