What is the church?
In the New Testament, the word church is used of God's people who have been saved by God's grace alone through faith alone in Jesus Christ alone. There is the universal church and the local church. The universal church is made up of all believers in all places. All who are truly saved belong to the church universal. Therefore, the universal church consists of all who have been regenerated by the Holy Spirit, who have placed their faith in Jesus Christ for the forgiveness of their sins, and who are thus children of God. However, most of the references to the church in the New Testament refer to the local church. The local church is the universal church gathered in local congregations or assemblies. It is the visible expression of the universal church and exists to exalt the Triune God, edify believers, and evangelize unbelievers. The Bible is very clear that all who are truly saved should be part of a Biblical, doctrinally sound local church.
