John XXIII was a leader. 

John XXIII was a leader in the Catholic Church. 
He worked as a priest and a bishop. He traveled to many different lands. He even helped save many people during a war. 
When he became pope, he made big changes. He called a large meeting for the Church. He wanted to make the Church more modern.
He believed that all people are equal. He wanted different groups to work together. He spoke with many different nations.
Many people call him "the Good Pope." He is now a saint in his Church. 
Pope John XXIII was a leader of the Catholic Church. 
He became a priest in 1904. Later, he served as a bishop. He traveled to many places like Bulgaria and Turkey. During World War II, he worked to help people. He helped save many Jewish refugees from harm. 
He was elected pope in 1958. He was 76 years old then. Many people thought he would only look after the Church. Instead, he called a big meeting. This was the Second Vatican Council. He wanted to make the Church more modern. He also wanted it to help the world.
He believed all people were equal. He worked to help different religions get along. He also helped different nations talk to each other. 
He died in 1963. Many people call him "the Good Pope." The Church later named him a saint. 
Pope John XXIII was a very important leader of the Catholic Church. 
Roncalli spent many years preparing for his big roles in the Church. He finished his studies and became a priest in 1904. 

In 1958, something unexpected happened for the Catholic Church. After the death of Pope Pius XII, Roncalli was elected as the new pope. He was 76 years old at the time. Many people thought he would only be a "caretaker" pope. This means they thought he would just look after things for a short time. Instead, he surprised everyone by calling a huge meeting called the Second Vatican Council. 
John XXIII had many important ideas about how people should treat each other. He believed that all people were equal because they were all made in God's image. He wanted the Church to be more involved in the world and in politics. He even changed the number of cardinals from 70 to 85. He also made sure to name the first cardinals from places like Africa, Japan, and the Philippines. 
Sadly, John XXIII did not live to see the big Council finish. He was diagnosed with stomach cancer in 1962 and died in June 1963. 
Pope John XXIII was the leader of the Catholic Church and the sovereign of Vatican City. 

Roncalli grew up in a very different environment than many other high-ranking church leaders. He was born in Sotto il Monte, a small village in Italy's Lombardy region. He was one of thirteen children born to Giovanni Battista Roncalli and Marianna Mazzola. His family worked as sharecroppers, meaning they farmed land owned by others. They maintained a vineyard, cornfields, and kept cattle. While his family was not wealthy, Roncalli was a descendant of an impoverished branch of an Italian noble family. This humble background shaped his perspective on equality and service.
His path to the papacy involved many years of religious and diplomatic service. He was ordained a priest on 10 August 1904. 
During the Holocaust, Roncalli used his diplomatic influence to assist many people in danger. 
Roncalli was unexpectedly elected pope on 28 October 1958. He was 76 years old when Pope Pius XII died. Many people expected him to be a "caretaker" pope. They thought he would simply manage the Church for a short time. Instead, he surprised the world by calling the Second Vatican Council. This historic council began on 11 October 1962. It was a massive effort to open the Church to the modern world. He also changed the structure of the College of Cardinals. He increased the number of cardinals from 70 to 85. He used this chance to name the first cardinals from Africa, Japan, and the Philippines.
His views on human dignity were central to his work. He famously stated, "We were all made in God's image, and thus, we are all Godly alike." This belief drove his efforts in ecumenical movements, which are efforts to promote cooperation between different Christian faiths. He also engaged in dialogue with communist countries in Eastern Europe and reached out to Eastern Orthodox churches. In Italian politics, he took steps to prevent bishops from interfering in local elections. He also encouraged cooperation between the Christian Democracy party and the Italian Socialist Party.
Roncalli's life ended before the Second Vatican Council was completed. He was diagnosed with stomach cancer in September 1962. He died on 3 June 1963. 
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