A church is a group of people. 

A church is a group of people. 
Many groups join together. They might join a larger group called a denomination. Some groups are not part of a larger group.
Some churches have leaders. These leaders help the people. Some groups choose their own leaders by voting.
Some churches are very old. They may use formal music and old ways of worship. Other churches use modern music. 
Churches can also be a safe place. In the past, some churches helped people escape from harm. It is a way for people to find help.
A church is a group of people. This group is often called a congregation. 
Many churches join a larger group. These groups are called denominations. Some churches are not part of a group. These are called non-denominational churches.
Churches have different ways to lead. Some groups choose their own leaders. They might vote for people called deacons. Deacons help make big choices. Other churches follow a leader called a bishop. Some follow a very large group led by the pope.
Ways of worship can change too. Some churches use modern music. They may have a less formal style. Other churches use old ways. They might use classical music and formal steps. 
In the past, churches were safe places. Some churches helped people escaping from harm. In the United States, some churches helped people escape from slavery. This helped the movement to end slavery. A church can also be a mission. This is a small church helped by a larger one.
A church is a group of people who come together for worship. This group is often called a congregation. 

Different churches have different ways of being organized. This way of working is called ecclesiastical polity. Some churches are independent and make their own decisions. These are often called congregational churches. In these groups, members might vote on big things like hiring a pastor. Other churches belong to a larger group called a denomination. Some follow a council of pastors to help them. Others follow bishops, like the Anglican or Lutheran churches do. Some even follow a very large global system led by the pope.
History shows us that the word "church" has many layers. The word comes from the Greek word ekklēsia. This word means "called out" or "called forth." It was used to describe a group of citizens gathering for a task. In the New Testament, the word is used many times. One scholar, George W. McDaniel, said it is used 109 times to refer to the Lord's church. He found that 93 of those times refer to a local church. The English word "church" itself comes from an Old English word. This word likely means "of the Lord."
How people worship can vary quite a lot between groups. Congregational churches often have a more informal style. They might use modern music and celebrations during their services. On the other hand, many parishes use very traditional ways. These might include formal steps called liturgy and classical music. Some churches, like the Roman Catholic Church, use special clothing called vestments. These items help make the service feel very solemn and serious. 
Churches have also played important roles in helping people in need. In the past, some churches acted as a place of safety. This is sometimes called church asylum. For example, in the nineteenth century in the United States, some churches helped people escaping slavery. These churches worked with the movement to end slavery. A smaller church might also be a mission. This is a small group that gets help from a larger church. 
A church, in the sense of a congregation, is a Christian organization or a group of people who meet for worship. While many people use the word "church" to describe a building, the term specifically refers to the community of believers. These organizations are often formally structured with constitutions and by-laws. They may maintain offices and be led by clergy or lay leaders. In certain nations, these groups can even seek official non-profit corporate status. 
How a church is organized is known as its ecclesiastical polity. This system determines how decisions are made and how leaders are chosen. Some churches follow a congregationalist polity, meaning they are autonomous. In these groups, the local members often vote on major decisions. This might include purchasing property or hiring and firing pastors. For example, in some Baptist congregations, elected deacons act like a board of directors to handle important business. 
Other churches are part of a larger group called a denomination. These denominations can provide many services to their local members. They might run educational institutions or missionary societies. Some denominations connect local churches through a council of pastors, which is common in Presbyterian churches. Other traditions, such as Anglican, Lutheran, or Eastern Orthodox churches, use the oversight of bishops. In some cases, a local church is the smallest part of a global hierarchy. The Roman Catholic Church, for instance, follows a system led by the pope, who is the bishop of Rome.
The history of the word "church" reveals many layers of meaning. In the New Testament, the term is used in various ways. Scholar George W. McDaniel noted that the term appears 109 times to refer to the Lord's church. He identified 93 instances referring to a local church and 14 instances referring to the church as an institution. The Greek word used in the New Testament is ekklēsia. This term literally means "called out" or "called forth." It was originally used to describe a group of citizens called together for a specific function or assembly.
Etymology, or the study of word origins, shows how the English word evolved. The English word "church" comes from the Old English word cirice. This was derived from the West Germanic *kirika, which stems from the Greek kuriakē. This Greek term means "of the Lord." It is likely a shortened version of kuriakē oikia, meaning "house of the Lord." Some scholars suggest other roots, such as the Latin circus or Greek kuklos, which means "circle." This might refer to the circular shape many religious groups used when gathering. 
Worship styles often reflect a church's specific organization and history. Congregational churches frequently use informal worship styles. They may prefer modern music and less structured services. In contrast, local churches united under bishops are often called parishes. Many parishes, such as those in the Roman Catholic or Anglican traditions, favor formal liturgy. These services often include classical music and the use of vestments. Vestments are special garments worn by clergy to add solemnity to rituals like the Holy Eucharist. 
Churches have also served important social functions throughout history. One such function is church asylum, where a congregation provides sanctuary to those seeking safety. In the nineteenth century in the United States, many churches played a vital role in the abolitionist movement. Specifically, the African Methodist Episcopal Zion Church helped shelter people escaping Southern slavery. Additionally, a smaller group may function as a mission. A mission is a smaller church that receives sponsorship from a larger congregation, a bishop, or a higher church hierarchy. Some congregational churches even refer to these new groups as "church plants."
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