Churches must use their global voices and moral authority to challenge systems perpetuating inequality between and within nations, Lutheran World Federation President Bishop Munib A. Younan has said in South Korea.

Younan was addressing the general assembly of the Lutheran Church in Korea early in October, Lutheran World Information reported.

"The churches are called to rise to this challenge. We must ask hard questions as we seek to call things what they are," said Younan, who is also the bishop of the Evangelical Lutheran Church in Jordan and the Holy Land.

The LWF president preached at the Daejodong Lutheran Church, visited the border dividing North and South Korea at Panmunjeom and met church leaders and government officials during the Oct. 1-6 visit.

In his keynote address at the LCK assembly, Younan stressed the unity of the church as essential, and its relevance in serving the world.

"Our unity is not focused on ourselves alone. It is not a goal for the benefit of our churches. It is not even a goal we seek to honor and bless God. The unity we seek as followers of Christ is for the sake of the world," he said.

On the notion that religion and politics do not mix, he challenged the church to address inequality in society.

"Our world is dying for fresh streams of water that will transform inequality to equality, injustice to justice, egocentric economies to economies of equal opportunity."

Turning to the refugee crisis in Europe as thousands displaced by conflict and poverty in the Middle East and Africa that the international community has not solved, the LWF president spoke as a church leader who is also a refugee.

"Both my faith and my history oblige me to speak up for these women, men and children who are washing up on beaches, are found decomposing in trucks on the highway, are crossing borders of barbed wire, and are barely surviving in makeshift camps," he said.

In his sermon at the Daejodong Lutheran Church, Younan highlighted the importance of honoring diversity as the church seeks unity.

The LCK president Rev. Chul Hwan Kim said Younan had brought solace to the church members.

"Born as a Palestine refugee, President Younan is one who can relate to the pain from division and anxiety over war. We are grateful for his visit in Korea. He is a comforter sent by our Lord to the Korean people living in the pain of division."

The LCK has 5,000 members in 50 congregations.