KINSHASA, Congo (AP) — Pope Francis urged Congo’s people on Wednesday to forgive those who have harmed them as he presided over a Mass before an estimated one million people in a country wracked by decades of violence.

Many of the faithful spent the night on the vast airfields of the capital’s Ndolo airport and passed the hours before Francis’ arrival singing, dancing and getting jazzed up for the pontiff’s first main event of his trip to Africa. His is the first papal visit to the country since St John Paul II’s in 1985.

The crowd cheered wildly when Francis began a languid loop around the airfields in his open-sided popemobile, as some people ran alongside or waved flags. Many of the women wore dresses and skirts made of pagne, a wax print fabric, featuring images of Francis or other religious symbols.

“Today I understand the enthusiasm of my grandmother when Pope John Paul II came,” said Julie Mbuyi, a 45-year-old mother of two who was wearing a Francis-themed outfit. “She was so excited to see him and the night before she couldn’t close her eyes!”

The crowd cheered again when the Argentine pope greeted them in Lingala, one of four national languages of Congo that is widely spoken in the capital, Kinshasa. And they listened attentively as he urged them in his homily to open their hearts to forgiveness, citing the example of Christ who forgave those who betrayed him.

“He showed them his wounds because forgiveness is born from wounds,” Francis said. “It is born when our wounds do not leave scars of hatred, but become the means by which we make room for others and accept their weaknesses. Our weakness becomes an opportunity, and forgiveness becomes the path to peace.”

Referring to the decades of violence especially in Congo’s east that has forced millions to flee their homes, Francis stressed that forgiving doesn’t mean pretending that nothing bad has happened. But he said the act of forgiveness creates an “amnesty of the heart.”

“What great good it does us to cleanse our hearts of anger and remorse, of every trace of resentment and hostility!” he said.

The morning Mass was Francis’ first big event in Congo after he arrived Tuesday. In his opening speech to government authorities, he condemned the centuries-long plundering of Africa’s mineral and natural wealth by foreign powers.

Later Wednesday, Francis was to meet with victims of the fighting in Congo’s east, where rebel groups have intensified attacks over the past year as they seek to expand their territory. At the meeting, people who have suffered unspeakable atrocities are expected to tell their stories.