On the occasion of the first Sunday of Advent on November 29, 2009, each Diocesan Bishop issued his 2010 pastoral letter and invited the faithful to take the initiative in evangelization of the world, not to mention of themselves.

In his pastoral letter entitled "The Church to Change the World," His Eminence Nicholas Cardinal Cheong Jinsuk, Archbishop of Seoul, said, "The mission of our society is to promote a unity, solving the social problem of class conflict which is the cause of mutual distrust, antagonism and strife." Cardinal Cheong also said, "The Christians must change the mammonism, hedonism, consumerism as well as the culture of anti-life into the Christian value and attitude, setting an example of evangelical practice in the family and workplace, where we live in."

The Most Rev. Andreas Choi Chang-mou, Archbishop of Kwangju, said, "We need a 'new evangelization' based on the repentance and renewal of the Christian individual and community, let alone the external growth based on the existing concept of missions." He then suggested an instruction for the practice of the new evangelization as follows:

- evangelization of individual and family (repentance and reflection)

- evangelization of neighbours (witness of life)

- evangelization of society (communion of the Church)

- living the Sacraments

The Most Rev. Thaddeus Cho Hwan-gil, Auxiliary Bishop and Archdiocesan Administrator of Daegu, asked his flock to participate actively in the Archdiocesan projects for the 100th anniversary of the establishment of the Archdiocese, including the building of the memorial Church and the publication of the Centennial History of the Archdiocese of Daegu, as well as the 2nd Archdiocesan Synod. He also asked the faithful to participate in the prayer and spiritual movement for the leap of the Archdiocese into a new future, on the occasion of the 100th anniversary of the establishment of the Archdiocese.

Other diocesan bishops also asked the faithful to have more concern about the pastoral care for youth and the practice of spirituality of the Korean martyrs.