The Pope noted the upcoming anniversaries of international conventions dedicated to assisting migrants worldwide. In early December, government representatives were to meet in Geneva to mark the 60th anniversary of the International Organization for Migration and discuss migration issues.

The next day, the Vatican announced that the international organization had accepted the Holy See as a full member state.

Archbishop Silvano Tomasi, the Vatican representative to international organizations based in Geneva, told Vatican Radio Dec. 5, "At a time when we're seeing a continuous increase in migrants, refugees and people on the move for various reasons, it's important to be present and participate in the efforts of the international community to bring something specific, which is typical of the Holy See: an ethical voice."

The archbishop said for centuries Catholics have generously assisted migrants and refugees "independently of their religious faith, their color and their legal situation. It is the human person, the dignity of the human person that counts and frequently is at risk in the situations of marginalization created in moving from one country to another."

Being a full member of the International Organization for Migration, rather than a permanent observer as the Vatican is with many U.N. agencies, will give the Vatican a stronger voice in an area where politics is not as important as meeting real human needs, the archbishop said.

In his Angelus address, the Pope also noted the celebrations of the 60th anniversary of the Convention on the Status of Refugees and the 50th anniversary of the Convention on the Reduction of Statelessness.

In his remarks to pilgrims on the second Sunday of Advent, the Pope called Advent "a season of inner preparation for the coming of the Lord" and a time that recognizes the important roles filled by Mary and St. John the Baptist in preparation for the coming of Jesus.